piston pushes

When she bounces on your little weenie while you thrust up.

Three more Piston pushes babe.

by Big Richard 114 May 11, 2017

Virgin Piston

A virgin position

Dude I heard that kevin gave her that Virgin Piston

by Thot Terminater November 17, 2017

piston job

When a sexy brunette gives you an amazing blowjob until you cum in her mouth, she then swallows it and licks her lips

My girlfriend gave me a piston job lastnight it was amazing

You lucky bastard

by Barbay February 21, 2017

triple piston

When a man, nude, between two females, as he is fingering both of them, one of them has a hand on his balls and the other is jerking his penis vigorously until they all get off.

Looks like a triple piston kind of night.

by triple piston December 12, 2012

pork piston

a WEENURR

this is my pork piston. it goes in your cumbustion chamber.

by Mediocrites_the_Average June 15, 2011

Stinky Piston

Take someone who is face down ass up and lube up your arm and repeatedly punch them in the asshole until your whole fist and arm enter. After it is in, then proceed to pump your clenched fist in and out. Making your arm bend and extend having the look of how a piston works. Hence… The Stinky Piston.

If you don’t shut up, I’m gonna give you a Stinky Piston!

by EkoMiles December 16, 2023

Pistoning

piss-ton-ing
(verb)

Rapid back and forth motion contained within the ass (closed first or otherwise) without removing the hand.

(see also: Fisting)

Him: So, how do you like to get fisted?
Me: Pistoning is my favourite! Piston my hole so fast until I cum without jerking off.

by PureTea January 9, 2023