Piston Fisting 

A double fisting that incorporates both anal and vaginal penetration. Fists are then pumped in and out in manner similar to that of pistons in a engine.

I gave that filthy sow the piston fisting of her life.

Piston Fisting by josh1234 January 4, 2006

Sex Pistols 

A band whom many belive created or started punk, though they did not, they did help define the genre. By the way, Iggy pop and the stooges didn't start punk, that would be the Mc5.

um...anarchy in the U.K...?

Sex Pistols by EHFAR December 7, 2003

Sex Pistols 

A great punk band. Had a lot of good songs, but had ill tempered members(sorry Jonny and Sid). And they had one hell of a good guitarist.

nothing else really to say

Sex Pistols by punkfroggie14 May 27, 2003

piston 

Penis

He has a long piston

piston by toxicvic February 9, 2019

Piston 

Double penetration sex, with one man fucking the girl in her vagina in and the other in the ass. They alternate thrusts to create a piston action, much like that of an engine.

"You take her in the ass, I'll take her in the pussy and we'll piston her"

Piston by Color Rot January 6, 2009

Piston Undo 

A brutal fucking either Anal or regular.

Guy A: dude remember that girl from the bar

Guy B: yea

Guy A: I took her home last night and gave her a piston undo, she couldn't even get out of my bed this morning and kept complaining about how sore she was.

Piston Undo by Sourcherios December 27, 2009

Piston Bully 

Someone who gives the engine pistons a really hard time due to driving at excessive speeds.

Redlining Rev head, Speed freak, Motorhead

1. Typical piston bully, only knows one speed... flat out!

2. Hes a piston bully, always off the clock its wonder he hasnt lost his licence!

3. Only a Piston bully could redline a corvette

Piston Bully by magpiez July 6, 2012