As made famous by Barstool Sports and other websites. GuessThatAss.com is a daily quiz to test your knowledge of the female celebrity butt. With this game you get hot babes, asses, and a challenge... What more could a guy want? Are you up for this challenge? Test your knowledge of the celebrity booty by guessing who that ass belong to... Guess That Ass and leave the name of your guess in the comments.