Around the 4:25 mark, Khloé calls the makeup project her and Kylie's "baby". While this seems innocuous enough, she then goes onto say that they have "eight babies" together. It's not the word "baby" that is the most interesting thing here, it's the number "eight".

There is no family on Earth more dedicated to their social media presence than the Kardashian-Jenners. Between them, they have hundreds of millions of Instagram and Twitter followers, and pages dedicated to the reality star sisters have amassed more fans than the population of a reasonably-sized country.

Unfortunately, because of that, the entire internet has got receipts.

We all know exactly when Kim K made that photoshop faux pas, we remember when Khloe first showed us a picture of baby True on Snapchat, and you bet we haven't forgotten about that two-year-old video in which Kylie Jenner high-fives her friend as they both celebrate not being pregnant at 19.

Yes, that's right - the Kylie Jenner who turned 21 this month and has a six-month-old child (you do the maths).

[[instagramwidget||https://www.instagram.com/p/BmRYfLPl7Nv/?hl=en&taken-by=kyliejenner]]

The clip resurfaced recently after being shared by @kardashianclips on Instagram. In it, Kylie and her best friend, Stassi Karanikolaou, answer the question, "Are you pregnant?"

"I'm not pregnant," Kylie says. "Never was."

The pair then high-five, and the youngest Jenner sister adds: "We did it. 19-years-old and we're still not pregnant."

Karanikolaou then adds, "I'm so proud of us."

Insta sleuths have worked out that this video was recorded in October 2016, and Stormi must have been conceived in about May 2017 (three months before Kylie turned 20) - meaning that the reality star would be eating her words barely half a year after she joked about teen pregnancy on camera.

Here's the clip in question for those of you who want to cringe over it for yourselves:

[[instagramwidget||https://www.instagram.com/p/Bm3vujlDbJm/?taken-by=kardashianclips]]

The footage came to light just days after Kylie faced criticism from a former Teen Mom star for supposedly "glamorising" motherhood at a young age.

Speaking on Heidi Montag and Spencer Pratt's podcast, Make Speidi Famous Again, Kailyn Lowry, who is now a mother of three, said that it was reality stars like Jenner who had more of an influence on teen pregnancies than people like herself.

"I don't want to hate her because obviously she's so successful, but when you're that young and you have that much money and you're able to have a nanny or have a lot of help, I think that shows that it's kind of glamorous to have a kid so young," Lowry said.

"I mean she wasn’t a teenager so obviously it’s slightly different but we got a lot of backlash for Teen Mom and 16 and Pregnant that makes it look like the show is glamorous and I just don’t agree because it took me 7 years to get a 4 year degree," she continued. "I didn’t always have the money I have now."

[[instagramwidget||https://www.instagram.com/p/BmwTDUcgCis/?hl=en&taken-by=kyliejenner]]

So far, Kylie seems to be doing a decent job at motherhood, and - like a true KarJenner - she's already kicked off Stormi's media presence by posting lots of adorable selfies to Snapchat and Instagram.

However, in light of recent events, she might want to lay off divulging too much information online. After all, she never knows what she might regret saying a year or two down the line...