Chin pistons

Arms and fists when used in a fighting sense, particularly when landing a felling blow upon the opponents chin.

1: Did ya beat 'im up den?
2: Yer! Oi leddim 'ave wi' me chin pistons dinnai?

by Flatster October 27, 2005

Piston Broke

To be "Piston Broke" is to be both pissed and broke. Most commonly heard amongst mechanics/bikers after being asked how they are.

Biker 1: "How are ya buddy?"
Biker 2: "Piston broke"

by mikeyboy9799 March 15, 2011

flesh piston

A word for cock that i have now officially coined. Also just like the term flesh pipe and skin flute, except a little different.

Andy likes to have his ass tamped by a flesh piston

by Stormin70 August 23, 2010

dude piston

male genetalia i.e. the penis

Power drill the yippee bog with the dude piston

by Tanner Rocks November 16, 2005

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.

by josh1234 January 4, 2006

Twin Piston

When a male wears a strap-on backwards and proceeds to have sex with two women at the same time. One in front and one behind

Bro, my ex called me last night and wanted to have a three-way with her best friend. Needless to say, I brought out the twin piston

by sthrock4 May 4, 2017

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.

by Sourcherios December 27, 2009