There's a very simple rule to follow when it comes to making statements on the human anatomy: if the issue you're talking about is not one you have personally experienced, you're probably not going to know more about it than someone who actually deals with it on a regular basis. Cis men - we're mainly looking at you, here.

I'm not sure quite what it is about the female body that makes some guys think they know more about it than, you know, an actual woman, but it seems all too common an occurrence that random men on the internet like to pipe up with things they think they know about us.

Take this guy, for instance, who thinks he's cracked the math behind that experience which is oh-so-not-familiar to men: periods.

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Obviously, there's a lot to unpack here. But let's start with the basics.

This guy thinks we get nine periods a year. Nine. With the average cycle lasting for 28 days, people with uteruses actually get periods more like 13 times a year - so that's just plain wrong, right from the offset.

Now let's take a look at this claim that the average period is between 5ml and 35ml per cycle... 'cause it's blatantly wrong.

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And, even if it was right, let's consider for a second that this dude thinks we can wear one tampon for 24 hours (assuming a period lasts seven days a week). This is incredibly dangerous. Tampons should never be worn for more than 8 hours at a time, as they can lead to potentially fatal TSS (toxic shock syndrome). Plus, it's totally impractical. Oftentimes, they become uncomfortable after a few hours, and can start to leak before that, even.

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Now let's get down to these claims about tampon costs. This dude thinks he can cover a year's worth of menstruation for £20 ($26). Twitter user @ermahgerd_hi explains why that's a lie.

"Let's call it 5 days of your period (altho lots of people have 6-7 days)," she begins. "That's at least 20 tampons per period. TWELVE periods per year makes a minimum of 240 for the year. We're gonna add in a factor for people who change it more often than 6 hours. You'd buy 5 packs (320 tampons). By the cited $7.90 per pack + shipping, we get ~50 bucks."

This works out at about $2,000 across a lifetime - and that's the minimum. A lot of people will need to spend more, either because they have heavier/more frequent periods, have sensitivities to cheaper brands, or, you know, just don't like the discomfort of having the same tampon in for six whole hours. Oh, and let's not get started on the cost of painkillers, the money spent on new underwear any time a pair gets inadvertently ruined, or the wages lost when we can't get out of bed to go to work because of debilitating cramps.

Needless to say, Twitter tore him a new one.

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So no, random internet man, we can't just lay off the frappuccinos and "stop whining", because this is a serious cost to literally half the population of the world. How about you lay off the mansplaining and listen to a woman for once?

While we've all considered ourselves unfortunate souls from time to time - plagued with a coterie of stubbed toes, lost possessions, and far too many drunken nights - there are some people who are so unlucky that we just assume they go around smashing mirrors and walking under ladders.

One such individual is a Reddit user who goes by the handle, TheFlyingPigSquadron. Last year, the Scottish woman shared her story on the internet, and what started with an everyday hair washing resulted in her being carted off to the emergency room. Read on to see how she ended up in a wheelchair, with a fractured ankle and a split head - but try not to chuckle too much at her misfortune...

It all began rather innocuously with the Reddit user writing, "So this morning I jumped in the shower and decided to wash my hair."

"I have very long and curly hair that reaches midway down my back. However, once it's wet the curls straighten out and my hair almost reaches my bum." 

Trouble quickly ensued, however, when the woman thought a spider had managed to find its way into her shower.

"So my hair is wet, shampooing done and I just need to rinse," she continued. "I tip my head back and flip my hair over my shoulder á la shampoo adverts everywhere. And feel something brush against the top of my bum. Being the mature and logical gal I am, I came to the one and only possible conclusion."

"Spider".

And it's safe to say that the Reddit user overreacted...

"With a scream a howler monkey would be proud of, boobs flying and looking like some sort of demented mermaid, I attempted to flee the shower stall. And promptly acquired a new skill; the ability to do the splits.

"This in itself was a spectacular feat of physics as there isn't actually enough room in my bathroom for a toddler to do the splits, never-mind a 5'9" half drowned rat. As a result, when my leading foot came into contact with the toilet pedestal, my body was launched back along the floor towards the shower. This left me wedged between the toilet and the shower tray."

Of course, it didn't end there, as she was then "abruptly b*tch-slapped by the shower door."

"One trip to the A&E later and I have a sprained ankle, a fractured ankle, two broken toes, a beautiful rainbow of bruises in some interesting places and a partridge in a pear tree."

Now, as if that whole ordeal wasn't enough, it was about to get a lot worse...

In an update post, the Reddit user revealed how she temporarily ended up in a wheelchair, and back in the A&E:

"So because I'm a special little unicorn my broken toes and fractured ankle are on opposite feet therefore I'm now rockin' a b*tchin new wheelchair (well not new, it's the NHS and it's Scotland).

"Also my flat is upstairs so it might as well be on Everest, so I'm at my parent's bungalow until my sprain is well enough for me to find another way to f*ck it up.

"I've had the wheelchair for about 6 hours now and have bounced it off every door frame in the house and scuffed two of the walls (don't tell my mother). After about 2 hours of me bouncing around like a ping pong ball my mum got the s*its with me and told me to go and annoy my younger brother, who is playing Xbox in the living room.

"So after letting him have a go on the chair and basically p*ssing about, he says three little words that have resulted in this update. 'Do a wheelie'."

"F*cking challenge accepted", she stated.

"I give it a go and end up tipping the chair backwards, arse over tits (which I'm sure would, again, be flying if they hadn't been secured in a locked and upright position) and cracking my head on the fireplace.

"I'm now on my back doing the world's worst impression of an upside down turtle with a cast and now a head wound. My 19-year-old, apparently adult brother is trying to crawl to the bathroom before p*sses himself laughing."

Thankfully, the unfortunate woman didn't end up too damaged. "No I haven't injured myself again," she continued.

"I've just split the skin which was fixed with glue and tape because apparently medical and art supplies are the same thing. I'm also back in the wheelchair as the very wise Dr felt 'crutches would just be asking for it.'

"He's not wrong I full admit I would have attempted to swing from them and/or use them as pirate swords. Though most likely both."

Well, there you have it: the unluckiest woman on the internet. While we're all glad that she didn't hurt herself too badly, I think we can all agree that her escapades were absolutely hilarious.

These days, it seems that people will go to some fairly extreme lengths in order to achieve what they believe to be a perfect body. Some folks go the healthy route, sticking to a sensible diet and a regular exercise routine, while others splash out on surgery, extreme food fads, and top dollar lotions and potions which claim to make you look 10 years younger.

Unsurprisingly, a lot of these alternative methods of staying in shape and looking sharp can leave people will some potentially nasty damage. Tanning beds, in particular, are notorious for causing damage to people's skin, and have been known to cause cancer before.

And nobody knows that better than Mallory Lubbock.

Lubbock had been using tanning beds since she was just 16 years old, sometimes going in for sessions every single day. Unfortunately, after years of subjecting herself to the ultraviolet rays, she developed skin cancer.

"So, today I got my first cancerous spot removed," said Mallory in an honest Facebook post. "I now get to go back for suture removal/wound check, an appointment to get my WHOLE body checked out, VERY routine check ups for a long while, and then routine check ups for life, and almost 100% certainly many more painful ass appointments of getting skin cancer taken off my body."

She went on:

"Damn it 16 year old Mallory that went tanning every single day for two years. I will try like hell to make sure my daughter will not be laying in a single tanning bed while she is under my roof and I hope her just hearing about and seeing Mama go through this will be enough.

"You guys. Get your daughters out of tanning beds. Get your 16 year old sister out of them. Hell, get out of them yourselves! It’s so not worth it. Is tan skin REALLY worth it? This sh*t will scar and this sh*t HURT. I am now the mom at the beach with the umbrella and my spf 100 HEAVILY applied. Never ever ever did I think this would happen to me (who does?)"

Not only does Lubbock now have a gnarly scar on her upper lip, then, she also has to worry about recurring skin cancer for the rest of her life.

Since she was so young when she started the treatments, she had no idea of the risk she was putting herself under. In fact, what many people haven't been told is that many sunbeds actually give out stronger UV rays than a midday sun in a tropical location. Plus, as people obviously don't put on any sun cream before they climb into one of the beds (whereas they probably would if they were heading for a day at the beach), they receive a much higher concentration of radiation than they usually would.

All in all, tanning beds seem to do basically the opposite of what they're intended to do. Sure, they might give you a natural-looking glow for a little while, but excessive use can cause cancer, premature aging, and damage to the eyes.

So, if you're really desperate for that bronzed look, perhaps consider going for the bottled option.

A bride has questioned whether she has the right to be angry after she discovered that her husband had a micropenis as he kept it hidden from her until after they were married.

Getting married is a big step in anyone's life, and although the ceremonies have become less traditional over the years, some still adhere to what was once deemed the correct way to do things.

It seems like one Redditor was convinced by her husband to not have sexual relations until they were married, and his motives soon became clear.

Taking to the popular Am I The A**hole (AITA) subreddit, a bride has revealed that she married her fiance after a year together, but he didn't wave to have sex until after marriage because he claimed to be "old fashioned like that".

She added: "We got close to fooling around a couple times but it never went far. I tried, but he always stopped after it went too far."

It was during their honeymoon when all was revealed, and it turned out that her husband had a micropenis and didn't share that information beforehand.

She asked: "Am I the a**hole for reading into this and being upset that I waited until my wedding night to find out that he probably isn't as 'old-fashioned' as he says he is?"

The Redditor went on: "I kind of feel lied to. Like a halftruth...or something was intentionally withheld from me. This was unexpected, to say the least."

Things took an even more sinister turn when her husband stumbled across the Reddit post, and threatened legal action as he believed people would eventually find out his name.

"I confronted him last week about intentionally keeping this from me and he said he was sure I would leave him if I knew about the size prior to the wedding," the post went on.

"He wanted to talk before the wedding but feared it being called off because of his micropenis and said if both families found out/gossiped about it he would be crushed."

The Redditor concluded by referring to her husband as a "sweet, sweet man" and that she wasn't going to walk away from him due to this.

People naturally wanted to offer their thoughts in the comments, as one person penned: "I’d be upset about the maneuvering this guy did, not his actual equipment size."

A second person said: "I would honestly leave him based on the outright lie. He's not old fashioned he manipulated you until you couldn't leave. And then gaslight and turns it on you when you reach out about it and he found out."

A third added: "He did deceive her, though. She was more than willing to test drive, yet he denied her the possibility because he knew she'd discover his little secret."

It's certainly a tough situation, and while nobody should be shamed for their body, honesty is usually the best policy.

Featured image credit: Tom Merton/Getty

There's nothing worse than being on your feet all day, only to hop on public transport on your way home and find that there's nowhere to rest your weary legs. Let's face it: it sucks. Your legs are swelling, feet burning, back aching... it's a nightmare.

Well, this was the case for a man who sparked a debate on Reddit, after revealing he didn't want to give up his bus seat for a heavily pregnant woman. Yikes...

Posting his experience on the aptly-named Reddit subforum, Am I The A**hole?, the man explained that his feet were sore after he'd completed a ten-hour shift at work, so when a pregnant woman asked him to give up his seat, he flat-out refused.

Titling the controversial thread: "AITA for not giving up my seat to a pregnant woman?" the Redditor explained that as he was riding a bus, a heavily pregnant woman came aboard. She immediately looked for a seat, but there were none left, and because he was closest, she looked at him imploringly.

He wrote: "I just told her no, I've had a long day and my feet are sore. I don't want to give up my seat. She started crying about how she's a pregnant single mom, and I told her I'm sorry, but that was her personal choice and she can't expect other people to accommodate her life choices."

He then explained that he shouldn't have to make concessions to her because she can't afford a car to drive. It was at this point that an elderly man on the bus interjected, and berated the original poster for refusing to give up his seat to the woman. He then offered to give the woman his seat, but as the exchange took place, the pair fell over.

"They started yelling at me, calling me all sorts of nasty names, but I just looked the other way and ignored it," he wrote.

Unsurprisingly, this was a particularly controversial revelation, and many Reddit users took to the comments section to slam the man for his actions.

One wrote: "The whole giving up seats for the pregnant and the elderly thing isn't because they're pregnant/elderly, it's because these particular groups are more likely to fall and suffer serious injuries when they do.

"OP, being tired sucks, but being tired and sore doesn't make you more vulnerable to bad falls, being pregnant does. That's why you're supposed to give up your seat. YTA and a massive one at that (because of the rant)."

A second added: "Yeah - [you're the a**hole]

"Did you know that being heavily pregnant really alters your balance, let alone the tired thing?

"No - you didn't ask her to be pregnant, but you can, as an able-bodied otherwise healthy person just choose to be nice."

Meanwhile, a third Reddit user criticized the other bus patrons for not offering up their seats either.

However, some people agreed with the original poster and said he had every right to say no to the pregnant woman.

One wrote: "NTA. She asked and you said no, you aren't obligated to give up your seat, that's why there are sections in buses for pregnant and old people, she could've gone to those seats. I've had days where my feet were so sore from standing all day they would swell, and in those days I for sure wouldn't give up my seat."

A second chimed: "OK, first - who gets to decide that she needs the seat more than OP? Were you in OP's shoes? I can imagine the answer is no.

"Second - if the lady had taken no as an answer and moved along (apparently common sense is not so common anymore) she could likely get a seat from someone else.

"Third - if the elderly guy wasn't 'enjoying' the spectacle and offered his seat earlier (as apparently he didn't need it that much) - they wouldn't have fallen.

"So I'll say it again - NTA."

A third agreed, writing: "NTA I completely agree. Not your fault she got on public transportation knowing that there might not be sitting room. She can deal until there's one available."

What do you think? Was this man wrong for refusing to give up his seat? Or was the real problem the other patrons who didn't intervene and offer their seats instead? Let us know in the comments section.

Featured image credit: Alex Segre / Alamy