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

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Top Definition
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

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt