The force of physics enacted upon ones arm after fist pumping for an extended period of time that causes one to continue fist pumping for a long period of time after. Can last anywhere from hours to days depending on the severity of the fist pump.
Artur: Why are you still fist pumping, its been days since that party ended.
Joe: Can't bro, I've got fist pump momentum.
by JoeBroFoSho September 19, 2011
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To put your hand in a fist and punch someone (or something) so hard it ends up looking like a biscuit

To punch something so hard that your hand feels like a biscuit afterwards
If she says one more thing about me, I'll biscuit fist her so hard.

I got mad once and biscuit fisted my wall.... there's a major hole in it now.

After I biscuit fisted John, his face was so messed up he had to go to the hospital.
by ukahaylee February 11, 2016
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A biscuit fist is when you take your fist like a club and punch the temple area of someones head.
Joe biscuit fisted Steve after they got into a fight.
by Pseudonym:Moose March 10, 2016
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Shark fisting is the act of placing your two fists together and sticking your thumbs up in the air while you fist your significant other. (Best effects achieved while other is on period.)
Betty; I heard shark fisting can feel really good.
John; I can shark fist ya right now baby.
by sharkfister69 November 14, 2013
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The insertion of the fist into a man's urethra
It is my boyfriend's birthday, so I'm giving him a French Fist tonight
by Teenita May 29, 2022
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* When you fist a girl so hard and so deep it causes her to pass-out.

* Shove it loud, and shove it proud.
I really should have token my girlfriend to the hospital after I gave her The American Fist.
by Casey Friedalnd March 20, 2008
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"Fist Bump" is when you go to get a cupcake but 2 racist men catch you.
by The one and only EDP445 August 10, 2022
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