An insult that is the combination of calling someone one a rat and cat, which makes a combination of an even more effective insult.
Hilly: Sorry, I ate your lasagne from the fridge this morning
Maya: OMG, YOU'RE SUCH A CATATONIC RAT!!
Maya: OMG, YOU'RE SUCH A CATATONIC RAT!!
by darkgrey2000 June 14, 2018
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