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1.
A private or semi-private area usually located within an adult bookstore/videostore where one can go and privately watch x-rated videos and pleasure oneself. Jack booths are generally associated with raincoaters.
1. "Dude, my balls are about to explode. I'm going to hit the jack booth on the way back from lunch and unload."
by Teninchkock Tuboneau November 12, 2007