Top definition
The act of freaking out in a chat room (i.e. screaming). Often identifed by the keyboard use of ALL CAPS and multiple exclamation points.
I don't know who this Joey269 dude is, but he started capping out on me when I said something about his mother.
by Rick V April 23, 2009
Mug icon

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