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The sexual act of pulling your arm back and punching your fist up your partners anus in a celebratory manner. The arm must be inserted up to the elbow or it is only considered a Bill Murray swirly. This is usually accompanied by a reach around.
Yo bro. I gave Jenna the a Tiger Fist Pump last night after we finished the Panamanian Petting Z
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