The act of secret masturbation. Never done for voyeurism or sport. Usually done in the comfort of your dorm room on your friends desk when you think they are in class.
When you walk in on your roommate and he is crouched over, he is definitely scissor fisting!!
by Paul, Andrew, Drew, John, Fabi, September 04, 2007
Code for masturbating when getting caught by friends. Usually a last resort.
Mark walked in on me beatin' it and I couldn't think of anything so I just yelled out "SCISSOR FIST!".
by J Ross August 31, 2007

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×