Top Definition
A prison inmate who has turned informant on other inmates for protection or benefit.
"Gentlemen, we must determine
which of our fellow inmates has become the Rodentus Incarcerarium." - Anthony "Fat Tony" D'Amico, The Simpsons

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

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).

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