Mattressbating 

The delicate act of dry humping your mattress into submission until you cum

Oh, I was mattressbating there like an hour ago, you wanna play some Oreos?

Mattressbating by Wildcardbitch69 December 3, 2010

mistressbating

What women do when they self pleasure themselves.

"Yeah, mistressbating means to self pleasure yourself, if you are a woman!"

mistressbating by LouisaM July 17, 2017