The sexual action when person A lays flat on the ground, with person B's balls in their mouth, while person B repeatedly hits person a in the forehead with his penis.
by Roxmosthard June 14, 2008

plumber with a big cock and big nose the italian stallion or when joey marsella does your girl in pretzel form and shes stuck like that till you come home to help.
wow that italian stallion fucked me like a jackhammer
wow thats joey the jackhammer
girlfriend:wow im a pretzel help!
boyfriend: joey the jackhammer was here~!!!
wow thats joey the jackhammer
girlfriend:wow im a pretzel help!
boyfriend: joey the jackhammer was here~!!!
by J.sella December 8, 2016

Definition of the action of having anal sex with a women so hard that her inside starts bleeding and u lick the blood off.
Guissepe-OMG, I gave Felipe an Idaho Jackhammer last night.
Rodrigo-Did she enjoy it?
Guissepe- i dont know but i don't think he'll walk for a while
Rodrigo-Did she enjoy it?
Guissepe- i dont know but i don't think he'll walk for a while
by Metepenes1 March 23, 2011

The act of flying 69'ing with a female. After ejaculation in her mouth, you pile-drive her into the ground.
"Dude, why is Chrissy in the hospital?"
"Shit got crazy last night, I pulled an Amish JackHammer so she's in a coma"
"Shit got crazy last night, I pulled an Amish JackHammer so she's in a coma"
by StevieBush October 13, 2011

by Michael Kain May 23, 2006

To insert one's nuts into the mouth of another (of either gender) in a rapid and continuous fashion similar to that of a jackhammer.
"Ted gave a jackhammer teabag to his girlfriend, seeing as she preferred the balls to her face rough"
by Teddy Franklin June 7, 2007

When a guy gets a boner, then pounds it on the forehead of his significant other, creating a jackhammer like scenario
by JCKM April 30, 2009
