Top Definition
A police informant; a "rat".
Hey, I thought I got away with that burglary but my crime-partner pulled a McGruff on me.
作者 Bobby Rose 2007年11月10日

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A guy that Hangs out at Old #3 in Roslyn, WA trying to get young guys to go to the bathroom with him.
You want to go McGruff in the bathroom
作者 Baller42o 2009年5月26日

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1. Crime dog
2. Used to describe a smell like that of a dog.
3. Libby
"I need to take a shower, I'm getting a bit Mcgruff."
作者 The Admiral 2003年7月23日

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The Urban Dictionary T-Shirt

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