meat piston

penis (when engaged in intercourse)

I was banging my meat piston in and out of her ass all night.

by big-k-special December 1, 2009

lubed up meat piston

Noun. Term for penis. Usually used to imply an imposing girth.

You let Todd put that lubed up meat piston in you? Shit!

by Hrontajkpa December 18, 2009