JacknAmie 

(n) also known as the 96er as it is a sexual position between two individuals similar to the traditional 69 except that the top preforms an artistic gymnastic maneuver called a "bridge" over the bottom. Best executed with the girl coming on the man's face before swallowing.

"We went to Hawaii and she totally 'JacknAmie'ed me."

JacknAmie by me6560 January 30, 2010

German Jackhammer

fucking a female/male in the ass violently while thrusting downward in a jackhammer motion. (boxing gloves are a must need for this strategy) As doing so... You aggressively strike your opponent in the kidneys until she/he spills human waste onto your penis. Once you are finished you stare into your opponents eyes and scream "ALL HAIL HITLER"

Guy 1: Bro you smell like ass!
Guy2: I just finished a bitch off with a German Jackhammer!
Guy1: Dude gnarly!!

German Jackhammer by Pelvic Fuck Fest May 16, 2015

Spicy Jackhammer 

An extremely rough and vigorous hand job performed by your partner that is akin to a jackhammer like hand action. The element that makes it spicy is receiving this highly pleasurable act while watching a Sean Spicer press conference which adds to the anger filled intensity and roughnes and absolute pounding of both the cock and balls with every full stroke.

My grapes are so swollen and sore today braaahhh. I can hardly walk.

What gives?

Carmen and I were watching the recent press conference and the handy she was giving me turned into a spicy jackhammer. I don't agree with the policies but man that was hell of a hand job.

Spicy Jackhammer by Eaton Holgoode March 1, 2017

Tallahassee Jackhammer 

A weapon created when a person shoves their turd into a sock and swings it as hard as possible and hits his enemy to their eventual demise. The harder/drier the turd, the tougher the Jackhammer. Another reason Tallahassee is known for its infamous nickname of "Tallanasty" and we can't have nice things in this dump of a town.

Randy pooped in his sock to make a Tallahassee Jackhammer and hit Steve in the head, causing a concussion.

Tallahassee Jackhammer by watermelawn March 17, 2017

Reverse Tijuana Jackhammer

If when a male and a female engage in a standing 69 where the female is the standing partner, the male achieves orgasm first, the female retaliates by dropping or thrusting the male straight downwards onto the floor and shitting on his unconscious face.

A variant of the Alabama Jackhammer

That stupid jackass Craig came in my mouth before I was even halfway there so I gave him a Reverse Tijuana Jackhammer.

Reverse Tijuana Jackhammer by Backwoods Jackass June 2, 2013

Jackhammering 

A man’s RAPID motioned sex style that gives ZERO PLEASURE to a woman. Jackhammering is a style used by AVID PORN WATCHERS.

“He was jackhammering me and it hurt my vagina.”

Jackhammering by Lagtx February 24, 2019

puking jackhammer 

The act of preforming the jackhammer from behind while a girl is puking her guts out in the toilet after a hard night of drinking. The contractions of the naughty muscles during a heave must be a delight to be experienced. Always hold her hair out of her face and rub her back (two-ball compound optional) for extra points and to show her that you really did care!

Guy #1 "Dude, I picked up that cum dumpster at the bar last night and got a puking jackhammer!"
Guy #2 "No shit?" "How was it?"
Guy #1 "My unit is shaped like a peanut today!"

puking jackhammer by frainslug February 2, 2006