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.
by Pope Big Ron Don John II December 30, 2022
 Get the Tiger Fist Pumpmug.
Get the Tiger Fist Pumpmug. by BaddestQueen018 August 3, 2017
 Get the Jersey shore fist pumpmug.
Get the Jersey shore fist pumpmug.