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1 definition by Liam is my name

 
1.
Bum sex is common a common slang for "anal sex, up the ass, and just raunchy". Alot of snowboarders like bum sex(girls) as you will see a many with stickers. Gay people like Bum sex :. they are gay..and like bum sex.

Bum sex is a great way to pass the time as its much more pleasursome for guys than it is for girls. Bum sex is a common pastime in American houses these days..heck, all houses..
Tanner likes bum sex from Liam, but David likes bum sex from Billy more
by Liam is my name January 06, 2006