Piston Slap

In a internal combustion engine when the cylinder is oversized and the piston will rock side to side producing a knocking sound.

Chad's car has really bad pistion slap

by Nobis July 29, 2003

Piston Slap

The act of fuckin a loose hoe, whose pussy is so loose a man's crank will slap around in it.

When I was fuckin Cathy i suffered from piston slap.

by Paul Trahan April 21, 2003

PISTON SHUFFLE

Where a woman gives a man oral and the man uses two dildo's on the womans vagina and anus. With all three actions simotaniously it resembles the workings of a motor. Continue until desired affect.

I gave Brooke the piston shuffle and she didn't walk right for a week.

by HAGARD May 26, 2008

Piston Return Spring

a fictional auto part used as a prank

"dont forget to install the piston return spring."

by dtall September 10, 2012

Burr's Pistol

A euphemism for Aaron Burr's penis.

Renee: Burr's pistol is so much better than Nelson's Column.
Keegan: Oh my god, Renee. Stop tripping, girl. Nelson's column is bigger and stronger than Burr's pistol.
Renee: Burr's pistol is much more accurate and never misses a shot.

by RageofMarat October 8, 2011

pretty boy's pocket pistol

a secondary weapon for the scout class in tf2

its kinda like a weaker version of the mad milk and pistol combined

scout1: i use the pretty boy's pocket pistol
scout2: why dont you just use the mad milk?

by sniper nate October 27, 2020

Grandpa's Service Pistol

Any weapon left to you in a will by a relative. Not necessarily a pistol, or even a service weapon, but usually. Generally left with an instruction not to use it for anything retarded. Usually in very good condition.

So named because of the stereotype of a grandfatherleaving his favorite grandson his service pistol.

abbr: GSP

Guy1: Hey, where are you going.

Guy2: Taking Grandpa's Service Pistol to the range...

Guy2: But... that's a shotgun.

Guy1: Yeah, "Grandpa's Servoce Pistol" is just what I call any weaon left to me by a dead family member.

by Al Golston November 20, 2011