OMCDH 

Acronym for Over My Cold Dead Hands, usually used over the internet.

Guy 1 : So... Loc, I heard Obama wants to take away our guns.

Guy 2 : I don't know, but if he does it'll be OMCDH!!!

Guy 1 : Huh?

Guy 2 : OVER MY COLD DEAD HANDS!!!!

Guy 1 : RIGHT.

OMCDH by AdvanXer August 16, 2009

omcd 

Oh My Charles Darwin, a form of OMG for evolutionists.

boy: OMCD did you see that?

omcd by cmack23 January 4, 2009

omadhaun 

A fool, an idiot

- omadawn Ireland, omadhawn Ireland
Derived forms: omadhauns

from Angela's Ashes"...Go back to your seat, you omadhaun, you poltroon, you thing from the far dark corner of a bog."

omadhaun by angelcat11 March 9, 2008

omdh 

the abbreviation means “on my dead homie”

“nah i didn’t do it i swear omdh”

omdh by anna ippolito May 24, 2019

Omchoo 

An annoying piece of shit with a golden heart. Makes shitty puns that Will make you suicidal. Loves to tease People when they say/do something wrong, which makes everyone wanna slit His throat. Very obsessive and protective of what he Loves. Really cares about His Friends and family, more than himself sometimes. He is the best person to talk with whenever you feel like shit and he can make anyones day 100%. He Loves being cringe and can legit make ANYTHING a pun, ANYTHING. He Will flame everyone for his mistakes, and yell at everyone and he LOVES to Argue

OMG he is being such an Omchoo...

Omchoo by Tanken no Zenkai July 5, 2017

OMCD 

Surprisingly there's people who are kind of lost with all these modern internet abbreviations and such like.
That said OMCD means OMG when said by these stupid people. Although Oh My God doesn't actually abbreviate to OMCD in any way, OMCD and OMG have shared letters and thus they are intermixable.

OMCD also associates to several company names.

<dumbguy> OMCD! I just accidentally killed my rabbit!

OMCD by killbone D August 10, 2008

OMCH 

the acronym for oh my chuck norris, much like the acronym for oh my god (OMG) except chuck norris beats god.

guy 1: dude OMG! those two just hooked up!
guy 2: you mean OMCH?
guy 1: good call

OMCH by krophtie October 17, 2008