Dry humping with your clothes on.
So did you get laid last night? No, just some jean jamming. Man, my dick is chafed!
by jrjohnson78 April 19, 2006
1 more definition
Dry humping with jeans on. Often causes irritation and chafing.
Justin Timberlake at 2011 Spike Guys' Choice Awards: "are we going to spend 2 straight hours jean jamming them until chafing occurs and we have to walk all funny for 3 hard days?"
by 51westside July 08, 2011