Top definition
1. A wrist spasm, Causing the victim to compulsively beat at the keyboard with their fingers, knuckles or wrists.

2. A slip of the fingers when typing, causing an odd array of incoherent babble.
--

1. "Dude, I was drawing before I went to type and I Key Mashed all over my keyboard!"

2. Screen Name A: Hey!

Screen Name B: AKHFAHFLJkafjafkj

Screen Name A: ....Uhm... Wtf?

Screen Name B: Sorry, Key Mash.
by TheGreatSaladOwl June 24, 2009
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