look up any word, like donkey punch:
 
1.
Anal intercourse.
He loves teh buttseks.
by Buttsekser March 18, 2003
 
2.
Humorous Internet meme for anal intercourse.
LOL cat says: Deir gawd make da buttseks stopz!
by frick1 February 24, 2010
 
3.
The cool kids (i.e. dumbasses and internet freaks) way of spelling Butt Sex. Now used by the sarcastic to make fun of people who use this term.
"lyke, omfg, in this lemon i jsut read, ther was butt seks!" - Words of an internet freak.
by toee May 16, 2006