1 definition by Choco1ate teapot

Top Definition
A miserable little dog, usually a terrier. The owner thinks that the sun shines out of their shit rat's arse. Given the opportunity, a shit rat will piss all over your house, and/or yap incessantly at nothing at all.
My girlfriend's Scotty is a shit rat. She pisses all over the floor right after going for a walk.
by Choco1ate teapot June 08, 2012

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