The advanced art of standing in front of someone, inserting your fingers into their anus, then forcefully rotating your wrist 360 degrees, it doesn't matter if it breaks, slowly insert more of your arm into the anus, then another forceful 360 movement, this time on your arm. Once this is completed, a full bottle of gorilla glue is applied to the arm and anus, locking it in place.
John: Hey Peter, why is your arm mangled?
Peter: Because I hit Dave with that reverse 360 piston jammer!
John: Peter, you're dead to me you retarded nigga.
Peter: Because I hit Dave with that reverse 360 piston jammer!
John: Peter, you're dead to me you retarded nigga.
by ThatSigmaRizzDawg January 17, 2025
Get the reverse 360 piston jammermug. When you stick his or her head head in the toilet and you penetrate your partners anus while flushing the toilet.
by LogJammer69 August 11, 2021
Get the Porcelain Log Jammermug. Heart attack. Jamming of the arteries
Don't give Ed a surprise birthday party. The man is 85! He might just have a big jammer and die before we can serve the cake!
by Kim Fulcher March 12, 2015
Get the Big Jammermug. by D. Gould July 30, 2008
Get the bum jammermug. by MrWafflehead January 15, 2014
Get the Boner jammermug. Seemingly hairless, but actually quite hairy terrorist. Face off wizard who has mastered the art of drawing a woman spread eagle, and creating awkward situations with strangers at bars. Overall nice guy, who can't stop buying surf boards.
by Peer Himler June 26, 2010
Get the Jumpin Jammermug. by somedude149 May 13, 2014
Get the Jesus Jammermug.