"fist on" is something fellow fisters say to each other, as a form of encouragement and also when a fister is leaving you say "fist on" to encourage them to keep fisten and if the fister is polite he/she will reply back "by the fistfull!". It creates good vibes and makes people feel happy and fruitfull, by the fistfull!
I must go now, thanks for last night, fist on my friend!
By the fistfull!
Keep fisten!
by aussie fister April 12, 2006
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Flip a coin, 50-50, When the guns go away you're gonna have to fist to fist me. - Kano.

I didn't have my knife so I had to go fist to fist with that cracker.
by DaveG217 September 10, 2006
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to insert ones fist into another individuals vagina or anus
Hey Richy, please fist my anus!
by shelp March 12, 2003
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the act or art of putting a fist in an ass or vigina, very popular practice among more evolved(kinky)gays. requires great care and huge amounts of lubrication
by Anonymous March 22, 2003
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A male or female getting a fist shoved up there ass till they cry getting fisted feels good actually
She got fisted so good she cummed
by Itchybuttholefucked February 12, 2019
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v. To insert a fist into someone's vagina or anus, presumably, to give them pleasure.

What you do if you have a small penis.
Eg. To fist, or not to fist, That is the question.
by GangstaRL December 19, 2005
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