The Estonian jackhammer

When a man spreads the woman's vagina flaps and attempts to stick his head into it. This normally ends up with a trip to the ER as it is not safe for both genders. This can be done with the same sex (see Finnish jackhammer).

Brian: "so I gave Sandra the Estonian jackhammer last night!"
Andre: "is she ok?!?"

by The isis November 12, 2014

Peruvian Jackhammer Peg

When you bounce up and down while doing the deed at an extremely fast rate.

Jessica was an absolute freak, she wanted to do the Peruvian Jackhammer Peg with me.

by firemansam24 August 9, 2025

Callahan Jackhammer

After a male and female have rough sexual intercourse, and the female's leg starts shaking and vibrating, thus not being able to walk.

Dude, I just gave her the Callahan Jackhammer and she won't be able to walk for a bit!

by Nutsnbutts October 11, 2022

The Jackhammer maneuver

When a man it is getting a massage and tucks his dick down between his legs. His partner while massaging his butthole begins to jerk him off, right as he is about cum his partner starts jerking his dick so hard that it hammers your nuts and blows your load on the wall where there is a target.

I was getting a massage and my girl pulled the jackhammer maneuver missed bullseye by an inch.

by Messynutz May 17, 2025

San Diego Jackhammer

When you eat pop rocks and give someone a blowjob at the same time

Dude, I just got a San Diego Jackhammer

by Jackdimmadomeee July 28, 2018

Steam jackhammer

The sexual act of defecating on a subjects chest, followed by rapidly inserting a penis into the feces pile.

I gave her the steam jackhammer, she was ok with it until I finished her off with a dirty Sanchez.

by Sexual seductor February 12, 2013

Sweaty Jackhammer

When jacking off you cannot bust and you begin to sweat and your arm begins to cramp and feels like you have been using a jackhammer for an hour

I was jacking off so long i had a sweaty jackhammer going

by BKing19 May 3, 2012