buttsmex 

to be truthful, it is butt sex.
better known as: ass fuck.

dude 1: u wanna buttsmex?!? ;D
dude 2: nuu tanks, get sum frum tat dude! :D
dude 3: wtf i'm not gay like that... O_o

buttsmex by Ophie.Teh.Odd.One September 2, 2009

Buttsmex 

Male anal intercourse. Stories involving buttsmex are usually written by female fangirls for various pairinggs.

"That's a story with some hot buttsmex."

Buttsmex by DXMJUNKIE March 8, 2010