The 37-year-old was discussing her former party girl days with Kendall Jenner and Scott Disick.
"I've heard stories about you," Kim's younger sister teased.
"I've heard some stuff," Scott added. "You went to like Disney and you were all high or something."
"I didn't know you like got high," Kendall said.
To which Kim replied "I got married on ecstasy," Kim admitted, referencing her first of three weddings. "I did ecstasy once and I got married, I did it again and I made a sex tape. Like everything bad would happen."
"You were high on ecstasy when you did the sex tape?" Scott asked of Disick asked of the 2003 sex tape Kardashian West starred in with rapper Ray J, which went public in 2007 and catapulted her into fame.
"Absolutely!" Kim replied calmly. "Everyone knows it like my jaw was shaking the whole time."
Kim went on to tell Scott and Kendall about a wild night she had partying with Paris Hilton in Ibiza. "Kendall honestly has like no clue. I definitely went through a wild phase I would say in like my late teens," Kim said. "I'm not like that anymore."