butt slamming 

Indulging in anal intercourse,with vim and vigour.

I gave him /her such a good BUTT-SLAMMING I got bruises on my hips!

butt slamming by vonKruger September 7, 2003

buttslamming bootie bandit 

big time pillow biter

He bent him over a fence like a butt slamming bottie bandit

buttslamming bootie bandit by Clit Liquid May 9, 2005

buttslammin' 

Term of enthusiastic approval, usually pertaining to something of relatively minor importance.

dude 1: Dude, they got cases of Papst for 8.99 over at Hagen!

dude 2: Buttslammin'!

buttslammin' by Skid Mark VZ June 4, 2007