To stare fixedly at someone in a hostile manner. Generally used to convey anger or disdain, can be a signal that a fight is about to happen.
That guy was mad dogging me after I got his girl friend's number.
by andrew April 25, 2004
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Slang term for Mogen David wine, especially the fortified-wine MD 20/20 variety. The MD stands for Mogen David. It was shortened to MD for their line of bum wines to differentiate between their more respectable (if no less nasty) line of kosher wines.

Contrary to popular myth, there has never been a wine sold under the name Mad Dog.
Got me some Mad Dog last night and got fucked up.

There's a new flavor of Mad Dog called Buck Bunny and it's licorice! Nasty!

Red Grape Mad Dog is 18% alcohol.
by Dr. Badwrench May 27, 2007
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cheap liquor, that may cause you to have violent actions or outburst which is what MD (mad) (dog) 20/20 alchol content.
Burn'a'Nugg favorite liquor.
by burnanugg December 07, 2003
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To stare someone down in an attempt to demonstrate who's more hardcore (i.e., who has more balls). If both persons refuse to drop their gaze, a fight usually entails.
That mother fucker wouldn't stop mad doging me. So I beat his fucking ass.
by rpunkboy February 02, 2007
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Someone who, during the course of a conversation or debate, becomes increasingly agitated and ends up ranting and raving.

The best way of tipping such a person over the edge is to start chanting "mad dog, mad dog, mad dog", in unison, quietly at first but growing in volume while tapping your nails on the table top. This will guarantee an hilarious end to the conversation.
Derek, a notorious mad dog screamed: "LOOK, YOU'RE MISSING THE POINT!....".
by Lee Farmie October 15, 2004
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