Based on the number of bikini pictures that teenagers Kylie and Kendall Jenner post to their Twitter and Instagram accounts, I'm guessing that they have a running bet with each other. Probably something like, whichever one of them is responsible for the most adult men being sent to prison by the time that Kendall turns 18 later this year wins a brand new Land Rover.
Or even better, they bet one dollar like the Dukes in Trading Places. "Haha, you sent 300 men to jail last year," 15-year old Kylie will say before forking over a crisp George Washington. But then Kendall will have to go back to shopping for crotchless jeans, because like Kris Jenner always says, "These wombs aren't going to impregnate themselves with wealthy seed."