OMD means old-man-dank. This term applies to particularly chronic weed of excellent quality. Often sold in jars and grown by experienced old timey weed growers in the country.
by mrpoobottem December 14, 2015
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Oh my DICK!
An expression paralleling OMG, but much more effective to use in any situation.
A: "Hey, I just fucked your mum!"
B: "OMD, you're a faggot, fkoff"
by Ffejmania November 7, 2009
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It's use for Demi Lovato's fans, it would be stood for "Oh My Demi"
OMD, that's a relly cool song!!!
OMD, she'll come to Costa Rica!!!
by DisneyFanDEJOSELMI July 20, 2009
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Person A: Did you hear about Sally hookin up with Jenny??

Person B: OMD... NO WAY!
by Lex222 March 17, 2010
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OH. MY. DICK.
When a man has an enormous bulge that you cant tear your eyes from....
by Beccy KB August 31, 2018
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One Mega Dump.
Synonyms Shit, Dump, Number 2
An abbreviation for ones never ending trips to the bathroom.
More polite than saying "I gotta take one mega dump!"
I had OMD this morning.
Gotta go - OMD waiting.
by B.Jew June 11, 2008
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OMD: Oh my dinkles.

-A term commonly used by band geeks during marching season and even during concert band season. Instead of saying "Oh, my dinkles," a band geek may just exclaim "omd." Dinkles are a special type of shoe that marching band uses on the field.

-Also, OMD may be used instead of OMG. Just because it's a band geek thing.

-First used: when a band geek was drawing band stuff on her folder in her english class, her fellow band geek asked her,
"Cool treble clef! Didn't you say you were going to draw your dinkles?"
She then said, "OMD! You're right!" and drew the dinkles.
1: So, are you forgetting anything?
2: No. Oh wait, OMD!

1: Hey, did you know that he didn't make All County Jazz Band?
2: OMD! NO WAY!
by Roxie2426 January 1, 2007
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