Most commonly found in porn... When a man stands over a woman who is upside down with her legs straight up or bent over her head getting railed so hard that she blacks out.
by DA YAK June 22, 2008
Masturbation or getting jacked off whereby the penis is stroked vigorously up and down with one hand and the glans (the penile head) is simultaneously pounded with the veracity of a jack hammer with the other.
Coach Torrance took me to the showers last night and I got hammer jacked. The pain and pleasure was to much and I nutted up my jock strap.
by Dick Onchin May 12, 2020
A project you start working on while geeking on meth. Weather it be workin on your car, cuttin the grass, fixin the plumbing, puttin on a new roof, taking shit apart, etc. all while geeked to the max on meth!!!
by Tha Realist nigga livin December 10, 2013
by FFBurger1 April 12, 2012
when in a threesome with to guys and one girl. one guy is laying down on the getting blown by the girl who is doing a hand stand. and the other guy is standing above the other guy and behind the girl and doing her while holding her legs. and he moves her up and down on his dick and the other guys like a jack hammer.
by johnny copperdick December 14, 2016
When someone hits the pipe and next thing you know all you can hear coming from another room is loud noises and cussing because they are taking apart a blue tooth speaker left by your girlfriend and you was supposed to get it back to her tomorrow after you meet your wife to sale some food stamps to dude down the street for some more stuff to put in the pipe.
Hey bro you ain't taking apart that Bluetooth speaker are you? Can you hear me keep it down stop hammer Jacking in my spare room. He hit it one time and he's hammer Jacking in the spare room.
by Schmidt Show April 23, 2022
it involves 2 men and 1 orphan girl the guy is sitting there fucking the girl and the other slides in to the dm‘s and and propels homies dick with the power of a 1000 cannons into the orphan throat and when the dude fucking the orphan nuts the semen is propelled out of the orphans ass and that is the missouri jack hammer
did you hear about that dude robert do the missouri jack hammer on his cousin his cousin was sore for weeks
by oh s d kill January 22, 2020