When you fist a girl and get your fist nice and deep, then picking her up off the bed with one arm you fist pump her whole body in the air
I Gave her a Jersey Shore Fist pump, lets just say she no longer has a uterus.
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Means to beat a beat if your dancing in a night club jamming basically
In a night club dancing means jersey shore fist pump when you pumping to the beat in the club