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1 definition by Jamin-mon

 
1.
When a male motorcyclist hits the brakes harder or more frequently than he should in order to have his female passenger thrust her womanhood into his back. Otherwise known as a cheap thrill.
The perv motorcycle rider frequently braked harder than normal in order to have get a Boob Jam from his big breasted passenger.
by Jamin-mon July 14, 2008