Usually after looking away from the urinal, pee leaks onto or in the hand holding or supporting the male reproductive organ, thus creating a fist full of piss.
by Zach Wagner February 7, 2009

by Murphsusername September 30, 2011

by Bölima November 24, 2007

by Freetheturtle April 17, 2021

Same theory as Schroeder's Cat, if you're blindfolded and fisting. You do not know whether you are fisting a vagina or a rectum until you remove the blindfold.
Have you heard of Schroedinger's Cat?
No, but have you ever heard of Quantum Fisting? Great time at my stag party.... I think.
No, but have you ever heard of Quantum Fisting? Great time at my stag party.... I think.
by Quantosexual December 7, 2018

A computing device you would hold in your fist. Included is any mobile computing device: calculator (the original), cell phones and mp3 players with texting and web access, smartphones, ect.
Standing in the auto parts store, I whipped out my fist-puter and found a great price for lube at the local super-store: back to the van!
by Fozzie Fozzmosis January 8, 2011
