Top Definition
A Merkrat is a person or thing that has done some pretty thug or crazy stuff. A Merkrat can also be someone who knows how to mac it with the ladies. It can be used as an adjective or a noun. Most Merkrats do what they want and usually get away with it.
He was a Merkrat when he hooked up with his girlfriends mother.
by Big Lee Money November 02, 2010
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