butt six 

Generally a typo of butt sex, but rarely refers to when 69 is performed in an odd fashion and the 6 actually refers to the butt rather than the sexual organs.

Butt six is nasty.

butt six by BurrowerMan November 4, 2009

sixpack butt attack

Inserting a thumb into someones anus while also putting the middle finger of the same hand into their vagina thereby resulting in being able to lift the person up and carrying them around like a sixpack.

Boozer the beer lover was thirsty for a brewski while fingering a horny honey but didn't want to ruin the mood so used the sixpack butt attack technique on her and went to the kitchen to got a cold one.

sixpack butt attack by jpg3 October 23, 2011