obsessive-compulsive disorder:
a mental illness which causes someone who has it to do something repeatedly for no reason
if you got OCD you might wash you hands repeatedly thinking that they are never clean
by fresh prince May 10, 2005
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When used by a fan of the twilight saga;

Obsessive CULLEN Disorder - referring to the family of "vegetarian" vampires

Otherwise;

Obessive COMPLUSIVE Disorder - An irrational urge to repeat a process ecessively.
a) I LOVE twilight! And I am not suffering from OCD, I love every minute of it!

b) Emily* has OCD, every morning she has to brush her hair 79 times or she has a nervous breakdown.
by Einstein's Brother January 3, 2009
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Obsesive Compulsive Disorder: A disorder most emos 'say' they suffer or at least want to cuz one day one of them, i guess a "cool" one suffered it. now they all think that every bad habbit they have is OCD.
Emo kid: OMG, i wanna cut myself cuz i think i like, suffer OCD...

Me: Just cuz u eat ur nails does not make u OCD DUMBASS...
by kamon842 April 15, 2009
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Unnecessary repetition of act. Unnecessary repetition of act.
UD = More than 500 definitions.

OCD = 5 + 0 + 0= 5 + 2= 7. Everything's fine now.
by Extrahighrocker18 October 2, 2010
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Obsessive Christmas Disorder: Any adult that is overly excited about Christmas and has a more than normal preoccupation with Christmas decorations and clothing or has more than two Christmas Trees.

Severe cases can manifest as early as October.
The lady next door is so OCD she has got three Christmas tress up and the dog wearing antlers and a reindeer sweater.
by Ododobe December 1, 2011
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-Obsessive Cullen Disorder-

One who's constantly obsessed with the twilight saga's fictional characters.
Beckie - "Oh my god! I love edward cullen! He's way better than any guy since 1901."

Jackie - "Looks like you have a bad case of OCD"
by Beckie-OCD March 25, 2008
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Oversized Cock Disorder (OCD) is when you have a oversized dick, you cannot remove this disorder unless you had vasectomy before you actually have this disorder, causes by horniness, Your dick is oversized and it will never get back to your medium penis, also you cannot fuck anyone's ass because your dick is, of course, oversized. if you get vasectomy you would be awkward in the lobby waiting until the doctor responds: "What exactly happened" and you would die in a coffin specifically built for you.
Guy 1: Mr jackson has OCD!
Guy 2: That would be awkward if we walked into his room!
by Allkingec January 27, 2022
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