greasy pistol

When a girl pisses on your penis, and then you proceed to have sex with her.

Hey do you know Margaret? I have her a greasy pistol!

by slickviktherik August 12, 2019

Greasy Piston

n. adj. A greasy piston is a person that indulges in activity of the homosexual persuasion. Greasy coming from the chocolatey brown color of shit, and piston from the penis and it's motion in and out of another man's rectum.

I think you are a greasy piston.

by Maxieboy July 17, 2003