MTX Jackhammer

The MTX Jackhammer is one of the largest (if not THE largest) subwoofer loudspeakers ever manufactured. It is often used in automotive applications, where it needs its own dedicated alternator, battery, and capacitor bank. It is very large and weighs several hundred pounds. It is in fact so large that it will not easily fit in a normal car. It is best suited for minivans, SUVs, Hummers, and the like. Speakers this large are often considered overkill for car audio.

My friend just got an MTX Jackhammer for his riced minivan.

by chonk cat February 7, 2009

jackhammering

when a man is having sex really fast like when jacking off hence jackhammer.

he was going so fast, he just kept jackhammering Me. it is not fun Having sex with him

by ooma90 January 5, 2008

Jackhammer

A sexual position similar to Doggystyle, but you lift her legs off the ground. Then you stand, forcing her body to be arranged at a downward angle. It is named for the resemblence of a construction worker pounding away on a jackhammer

Jim: Can we go fr Doggy tonight?
Alicia: Doggy is getting boring, lets mix it up, JACKHAMMER ME!!
Jim: Who's your daddy bitch

by Smizzles fo Rizzles October 2, 2007

New Jersey Jackhammer

You begin by performing 69 while standing; once you're finished & she swallows, you give the chick a WWF-style piledriver.

Note: it is very important to remove your equipment from her mouth before attempting a New Jersey Jackhammer so as to prevent a Guatamala Guillotine!

by 2tired2think September 8, 2009

Spectral Jackhammer

When the protagonist dons 1980's-style wraparound sunglasses with Neon-sides and flourescent-tinted lenses and proceeds to jerk off into a ladle.

A proper Spectral Jackhammer should be preformed while listening to "One Night in Bangkok!"

by Jam Batterson December 30, 2008

Jackhammer soak

A derivative of "soaking" or the "mormon soak" which is used to obviate the restrictions placed on pre-marital sex. In this case, a male performs a standard "soak" (where he places his penis inside of a female and just lets it sit there aka "soak") and has a third individual jump on the bed which facilitates sex like motion. To be clear, this is still not sex, and both individuals are still classified as virgins even after hours of jackhammer soaking.

Greggy C: I'm taking this wicked hot cowgirl home tonight but she wont let me bang her because she is a virgin

RB: Yo man I got you, I'll come over so you can give her the jackhammer soak and you'll still be virgins

Greggy C: I LIKE THAT

by Not_A_Real_Doctor December 17, 2021

pogo-jackhammer

When a dude lifts the legs of another dude whose laying on his back, bending his ass straight up. He holds the dudes legs while fucking him in the ass. Thus producing a "pogo- jackhammer" effect.

Willie was passed out on the bed. When Jason noticed that Willie was naked and laying on his back in a prone position he immediately scrabbled on to the bed, lifted Willie' s legs and Pogo-Jackhammered him like a construction worker at a job site. Shit was gushing out all over the room as if he just struck oil.

by Club September 13, 2016