the act of taking somone up the bum.
or
the act of getting taken up the bum.

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

putting someones willy up another ones bum hole. thus bum sex. (anal penetration). WARNING! EXTREME PAIN!

Word used as general adjective or exclamation, generally for something negative

To hobos going at it.

to thrust ones genitles back and forth up a womens anus, giving an orgasom. Very pleasurable for men, but not women, can be akward if not well lubricated

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..