Insane Clown Posse Out Rhymed By Giant Pussy Cat

7/11/2013 4:45 PM PDT

The Insane Clown Posse topped GQ's list of the worst rappers of all-time -- and to add insult to injury ... they got beat by feline rapper MC Skat Kat!

Yeah, he's a cartoon -- but still sucks less than ICP. According to GQ.