beating her back out

To engage in sexual activity, usually in what is often referred to as "doggy-style," in a somewhat violent manner as to cause much volume from your victim, but much pleasure for both parties.

She screamed aloud as she lost her hip control while I was beating her back out

by Mr. P March 1, 2004

beat her back out

Rough sex from the doggy style position.

Keisha has a fat booty. You already know I had to beat her back out.

by Mr Decatur September 7, 2017