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"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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When someone ejaculates on your fist, and you begin to fist them with it.
Clayton ejaculated on Ivonya's hand;then she began to fiston herself
by Pappy bless November 30, 2016
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