When you're stuck in traffic listening to the radio and you notice the car next to you listening to the same station. You both roll down your windows and start jamming.
I rolled up next to a guy in traffic today listening to the same song on the radio, so I rolled down the window and we started traffic jamming.
by chuckgregory February 24, 2010
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When the situation get's piled up. Two people deep in the back and one or more in the front. That's a jam! Causing everyone's engine to burn into overdrive.
Benny boning Ashkan Boning Marisa in the front.

"Oh my gawd man, my ass and my cock are aching from that Traffic Jam I was stuck in last night!"
by shagondragon June 27, 2013
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A great excuse to get an oral while driving.
I couldn't wait for the next traffic jam up ahead, I was so horny with my woman in the car.
by krock1dk@yahoo.com March 16, 2008
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at least three guys and one girl, when the guys all try to jam there penis' into one hole.
We invited her over so we could give her a nice traffic jam.
by ballsack jumbler69 July 01, 2011
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The act of fingering or finger jamming a girl while she is driving.
My girlfriend agreed to drive me to work, but only if I gave her a traffic jam on the way there.
by Kyle156 April 28, 2008
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