Top Definition
1. One who lives in the anal cavity of another individual. These organisms never leave the host's anus, as they obtain their nutrients from their habitat.
2.An annoying animal or person.
I can't get rid of my god damn ass critters!
by CJAH April 21, 2004
1 more definition
A small animal or child of extreme annoyance.
Manzo's god damn ferrets are major ass critters.
by MPC November 03, 2003

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