where someone has got a beautiful booty but say it in a way that sounds like beautiful so if they hear u, u can just say beautiful
(Girl walks in front of 2 males)
Male1: Gosh look at that it's bootyful!
Male2: Ye sure is!
Female: What did you just say!!
Male: I said you're beautiful ^^
Something you tell a female she is, making her think that you are complimenting her and calling her beautiful in a cute "pooky" voice, when actually, you are describing the niceness, and fullness of her posterior.