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.
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