Top Definition
An opinion concerning another's mental wellness.
"That fucker's crazier than a shithouse rat."
by Modge September 21, 2003

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It doesn't get any worse then this!
That bitch is as fucked as a Shit House Rat
by Phat Boys April 02, 2004

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Something or someone that would live in a port-a-potty or an outhouse,Freaky,Gross
That bitch is uglier than a shit house rat
Shes crazier than a shit house rat
by hardrider93 July 22, 2009

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The saying "He is as cunning as a Shithouse Rat" is used to refer to someone who is expertly sly and/or sneaky. A shithouse rat being of a lower class than even a regular lowly rat, makes this form of cunning even more underhanded.

This term does not refer to anyone's "mental state".
Don't take your eye off him for a second! He's as cunning as a Shithouse Rat.
by Treasur-Ess September 07, 2016

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Your favorite word on a white mug.

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt