Top Definition
a mythological creature that began its life as a rat, but desired to be a kitty. this large rat (the size of a kitty), only wants to be a kitty so that it can eat kitties. a kitty rat will be accepted by the kitty community and then ultimately rejected after it eats several of the community members. kitty rats are scary but some are also very nice. few kitty rats just admire kitties to the extent of attempting to look like one, however if their true identity as a rat is ever known within the kitty community it will be killed.

oh my is that a kitty rat!

i saw tanya and ariel walking their kitty rat today.

a kitty rat ate my cat!
by kittyratkisser August 11, 2008

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