bumsac
The black slimey stuff on your feet from hockey skates after skating in them.
There's bumsac all over my feet
bumsac
the space or skin between your testicals and your anus.
Sheri: wanna know what turns me on?
Bob: what, girl.
Sheri: when guys lick my bumsac
Bob: what, girl.
Sheri: when guys lick my bumsac