Butt Clapper 

You have become sooo good at clapping butts that someone decided to put it in the urban dictionary

You were a butt clapper last nite.

Butt Clapper by PEANUT_1211 February 27, 2019

Butt Clamper 

A "Butt Clamper" is someone that uses there anal muscles to clamp onto a penis so hard that the penis cant exit.

"Hey Dana quit being a Butt Clamper."

Butt Clamper by Brandon Klein October 24, 2008