Even if you keep up with the Kardashians, you haven't heard their most embarrassing moments!
During their now-infamous Cosmopolitan cover shoot, Kourtney, Khloe, Kendall, Kylie and Kris revealed their most mortifying memories in a video called "Kardashian Konfessions" -- and these ladies weren't afraid to tell all.
Kylie hesitated to share her moment at first, but older sis Kendall wouldn't let her off the hook.
"I know they're going to use it and I'm just too embarrassed," the 18-year-old reality star said with a laugh. "When I was 5 ...," she continued as Kendall started cracking up.
Between laughing fits, Kylie finally revealed that she pooped her pants and left a trail throughout the house, going all the way up a staircase.
Check out the clip below to hear the funny story -- plus, find out who joined the Mile High Club in a very public way and who has been dubbed the family "queefer."