A way of emphasising one's keenness to partake in an activity- often surfing, drinking or fighting.

Often shortened to mad dog.
Mad dog keen is a phrase made popular by the cult underground movie "Jordanman 2.0"
Dr Pain: "Wait...lets make this interesting. keen?"
Jordanman: "Yeah....Mad dog!"

Mayonazi: "Wanna get crunk as?"
Everyone: "fuck yeah, mad dog keen!"
by white-trash-doris May 30, 2008
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The secratary of defence for the United States and a retired 4 star marine general. He is a totally raw mother fucker and stacks bodeis miles high. His knife hand killing radius that succeeds anything to ever exist on this earth. he has seen the worst of human nature and lives to tell about it. His takes his scotch with 4 drops of rattle snake venom. One for each star. But on a serious note he is the most honorable and humble man ive every had the plaesure of meeting.
That mad dog mattis is a raw fuckin killer.
by DUDE_JUST_ STFU March 8, 2017
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The common name for a rabid female creature that lives in the hills of Orinda, Ca and drives a small, blue Honda. This creature preys on the lives and feelings of high school aged public speakers, which she enjoys covered in fermented salad dressing and stinking shrimp. She is extremely dangerous and may be identified by the overuse of the words \"accurate\" (pronounced akrit) and \"enunciate,\" the misuse of the phrase \"in other words,\" or by the repetitive scratching of a large mole on the back of her neck. Methods of attack include giving the evil eye, talking about her grandchildren or her 5 marriages, or petitioning the board of the NFL. Take caution as she has been known to wear sundresses that cause blindness unless eye protection is worn.

Also known as \"Ecrats the Ogre\" and \"the devil incarnate.\"
\"Somebody watch the window to see when Mad Dog is coming back!\"
-Anonymous student

\"The principal hates Mad Dog, but he can\'t do a damn thing because of her tenure!\"
-Vice Principal at OPI

\"Mad Dog\'s from your school? I know exactly who you\'re talking about! What a *****!\"
-Random Public Speaker from Florida (no joke)
by 5th Year Veteran April 27, 2005
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When a man cum in a womans mouth and she lets it dribble out. Thay look like a rabbid dog hence the term mad dod
Ernie shot a load in Sarah's mouth and she gagged. Wow I guess he mad dogged her
by T.Real August 31, 2008
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Mad Dog 20/20 18% or 13% alc. by vol.

As majestic as the cascading waters of a drain pipe, MD 20/20 is bottled by the 20/20 wine company in Westfield, New York. This is a good place to start for the street wine rookie, but beware; this dog has a bite to back up its bark. Mad Dog Stands for Mogen David, and is affectionately called "Mad Dog 20/20". You'll find this beverage as often in a bum's nest as in the rock quarry where the high school kids sneak off to drink. This beverage is likely the most consumed by non-bums, but that doesn't stop any bums from drinking it! Our research indicates that Mad Dog 20/20 is the best of the bum wines at making you feel warm inside. Some test subjects report a slight numbing agent in Mad Dog 20/20, similar to the banana paste that the dentist puts in your mouth before injecting it with novocain. Anyone that can afford a dentist should steer clear of this disaster. Avaliable in various nauseating tropical flavors that coat your whole system like bathtub scum, but only the full "Red Grape Wine" flavor packs the 18% whallop.

Liquor stores are starting to be infiltrated by a 13% variety of Mad Dog 20/20 Red Grape. There is also a new "Blue Raspberry" flavor with "BLING BLING". Even the lowest functioning of bums will know not to get swindled out of 5%.

ghettowine.com/maddog/westfield.html
Do you have my bottle Mad Dog 20/20 for me today?
by Jimbo Creamer July 27, 2010
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Mike Najarian, also known as Maddog, is the drummer for the Boston-based rock group, State Radio. He is from Duxbury, MA, attended Boston College, and has been with State Radio since early 2006.
Najarian is a fiercely aggressive drummer and is often the biggest source of energy when State Radio is on stage. Since his addition to State Radio, he has been accredited for inspiring an even greater sense of rock and energy in the band. To quote Chad Urmston, State Radio's lead singer, "Because Maddog plays like an animal."
"That's Mad Dog on the drum kit!"
"Mike "Mad Dog" Najarian is one sexy individual."
by Sgtcampsalot April 15, 2008
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Wanna go to the store and get some Mad Dog 20 20? I’m trying to get drunk as fuck on this magical juice for the low.
by bluexstars January 28, 2020
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