1 definition by Wereboke

Top Definition
Critical Attack To Opponent.

In Dungeons and Dragons, the act of rolling a 20 sided die(d20) and landing on the 20. This means you really fucked up the opponent.
Marty rolled a CATO on that wizard,
I totally CATO'ed your mom's ass last night.
by Wereboke August 09, 2005
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