MD stands for Master's degree in Doctor wannabe.

The people that are good candidates for this credential behind their names, are people that think they know everything, snobby, pathetic in life and couldn't do much because they ended up being an MD for someone else. Most likely their parents wishes and not their own.

Son: "I think I'll go get my master's degree in doctor wannabe. So I'll be an MD, and pretend to save lives like in T.v."

Dad: "Good choice son, I am proud of you."
Son: "Oh, Father!"
*hugs*

See. Doing it just for the parents, especially if the mother is a CCRN and developed a complex because she couldn't be a real doctor because she was a hippy.
by TiraTekira December 25, 2007
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Dude, he is such an MD! I could hardly feel my ass after that!
by Sunblood September 15, 2003
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the abbreviation for "mack down," the act of hitting on or attempting to seduce someone of the opposite sex.
"Yo, Mikey. MD. MD."

"I was just MDing on your grandma. Nice!"
by Hubbard Reilly March 04, 2008
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Noun for Major Dogshit. Also known as the crown jewel of CI but often referred to as a serious asshole. Usual is seen with a smurking grin and loves to wear pink panites when wrestling. MD will make you money but you should try and steer clear of MD becuase it is usually accompanied with lots of BS.
MD was all over the place and cats were getting sick because the BS was too much!
by Deeze Nutzzz April 15, 2009
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MD: Mary Dickhoppers, Mary Dicksuckers, just to name a few names of a clan full of pricks
by BillyBobJoe June 20, 2003
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Fuck dude, I'm so faded off this MD Kush! o_O
by jamesKush December 31, 2010
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Portuguese shorthand for Meu Deus, which translates in English to My God! Often used online
Person 1: Foi pra pria hoje e eu estive roubado... (I went to the beach today and I was robbed)
Person 2: Mds, que horrivél! (My god, how horrible!)
by HiVoltage December 13, 2014
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