Bumcrease
Another word for "ass crack" usually said with a Jamaican accent.
Man 1: Oh no, I just sat in mud!
(Stands up)
Man 2(Jamaican accent): Aha! It lookes like you got shit all over your bumcrease!
(Stands up)
Man 2(Jamaican accent): Aha! It lookes like you got shit all over your bumcrease!