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.
Piston Fisting by josh1234 January 4, 2006
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
Piston Fisting
The art of shoving one whole fist in a girl's arse and the other in her vagina and ramming them in and out alternately (like a piston system)
Piston Fisting by Tha BIG Daddy H July 26, 2009
Related Words
fistin piston
a fistin piston is a very delicate process that can be done on any girl who is down for some serious pain and pleasure. there are two different ways of going about the fistin piston.
1: having a girl lay in front of you, while fisting her sideways sloppy joe with an in and out motion with both hands, similar to the pistons in a motor. this motion is incredibly similar to throwing bows
2: the second process, ironically called number two is similar to process one although the fisting is done with one hand going in the slimy hatchet wound, and one hand going in the baloon knot. aka: {5 in the pink 5 in the stink]
1: having a girl lay in front of you, while fisting her sideways sloppy joe with an in and out motion with both hands, similar to the pistons in a motor. this motion is incredibly similar to throwing bows
2: the second process, ironically called number two is similar to process one although the fisting is done with one hand going in the slimy hatchet wound, and one hand going in the baloon knot. aka: {5 in the pink 5 in the stink]
it was bad enough danielle's mom walked in on us, i was giving her a fistin piston, there was bloood on the walls and everything. i felt bad so i helped her find the random pieces of sloppy sausage wallet that were strewn across the rug.
fistin piston by ed harris September 18, 2005
More from Urban Dictionary
trucker's tan
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
trucker's tan by population361 May 30, 2006
Word of the Day on October 5, 2026
kidulting
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
Boffin
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”
Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
Pee Calculus
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026