A person, usually male, that has a twisted sense of what is acceptable in society. They frequently engage in acts or say things that are completely outside the norm without even realizing that they are doing so. Typically, it is clear to this person's friends that he is a sick guy however the sick guy himself may not know it. Similar to a crazy a-hole however a crazy a-hole engages a sick act here and there while the acts of a sick guy go down to the core of his being.
"Why did you eat that piece of bacon that had been sitting out for three days. You're such a sick guy."

The guy who drinks the leftover beers left out overnight the day after a party. He's a sick guy.
by Chris Breezy 3 November 17, 2011

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Top Definition
A person partaking in actions worthy of praise from fellow peers.
Sick Guy behaviour includes:
Chris Man walking into a restaurant in a hoodie and trackies and aksing everyone for a "touch".
Heppell purchasing a car from YES! car credit.
Darrell bedding a stani.
Patson getting tossed off on the dancefloor.
Beester dancing.
by Beester January 18, 2006

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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