butt massage 

the act of massaging another persons butt
usually in males massaging a females butt, it results with the guy getting an erection

My wife's butt was so sore that I gave her a butt massage

butt massage by jokeme December 18, 2009

Butt massage 

When you are laying on the floor and someone close to you randomly stands on your butt and makes weird dance movements while trying not to fall off.

I hate it when you give me a butt massage. In the end everyone is hurt in some way or another.

Butt massage by Satan's babysitter January 30, 2018