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4.
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
 
8.
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
 
9.
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
 
10.
Definition is the malt liquor the drink Maddog 20/20. Comes in a variety of flavors. Sold and put in a brown paper bag.
Im going to the store to buy some Maddog, i hope they have cherry flavor.
by Maddog Jenkins December 04, 2004
 
11.
A typical Australian male teenager aged between 18 - 35 years old.

A 'Maddog' is a male who loves "gettin' on the piss" (consuming a lot of Alcohol, typically Hahn Super Dry or West End Draught) - once intoxicated a 'Maddog' generally is unable to control his actions, physically and verbally.

'Maddog's' have a large circle of mates (friends) also, who together they consume alcohol in ample quantities.

Generally a 'Maddog' speaks his mind, curses, likes to throw his weight around and have a good time, without considering the implications of his actions.

'Maddog's' also attend most Australian Music Festivals.

They also love going to Bali and Thailand for a holiday.

Most 'Maddog's' are very confident beings, and they like to participate in active sports (AFL, Soccer, Gym etc)

Most 'Maddog's' also do alright with the ladies (unless they get too drunk and hurl verbal abuse towards the female gender, becoming an increasing issue).

Most 'Maddog's' have lost their driver's licence at some stage of their lives (Drink driving, speeding, burnouts - burnouts are usually performed to impress other fellow 'maddogs')
"Hey champ, god I'm that hungover today, but yeah of course I'm coming out tonight I'm a mad dog"

"Fuck that cunts cooked ay, maddog"

"Did you go home with that blondie from Stereo's? Maddog!"
by maddogfromadelaide October 10, 2011
 
12.
Slang word for the drug MDMA, so called because it has the tendancy to turn you into a slavering, but friendly, alsatian.
You should have seen Ben, he was gurning his tits off on mad dog
by Dwaine Howe July 12, 2008
 
13.
just being a mad bastard
Blairy is a mad dog in every way
by 2j maddogs April 15, 2007
 
14.
Another name for a penis, Used mainly by people who are constantly in Skengman mode
Cameron : Have you seen my maddog?

Liam: Yes that poor woman has got it sticking into her eye

Cameron ----____----
by Y2l12898 July 02, 2011