look up any word, like the eiffel tower:
 
8.
An exclamation used to express surprise.
Oh my God! He jumped off of a twelve-story building and lived!
by Anonymous July 15, 2003
 
9.
An exclamation of extreme shock or surprise... but only valid when the word God is capitalized.
"Oh my God Doug... I can't believe you didn't capitalize the word God"!
by Maxo888 February 22, 2014
 
10.
The sound made through gritted teeth when receiving intense sexual pleasure.
Kathy: You were amazing in bed last night
Dammy: I know, I made you say 'OHMYGOD.' Again.
by Lydia1 November 07, 2010
 
12.
An appeal to a deity.

Or just something said as an exclamation point or as a swear word when angry.
What Moses was taking about when he said thou shall not take the name of the Lord your god in vain.
Oh my God! I hate this freaking class!
by Reasonless Chatter t IrRevernt March 26, 2012
 
13.
A phrase that is commonly used by stoners. It is yelled to express strong emotion (i.e. surprised, scared, excited, angry, and overjoyed). It is yelled most often when people are high. Allot of the time it is used with the phrases as "I need it" and/or "It's so good"
1.)
Jeff: There's a dead body in that bag your neighbor is carrying to his car.

DMS: OH MY GOD!

2.)
Jeff: This bud is amazing. It is so fluffy and moist and fresh and look at those colors. The beautiful light green buds are just covered in orange and white hairs. Hit this shit man.

DMS: OH MY GOD! IT'S SO GOOD! I NEED IT!
by Dank Master D a.k.a. DMS February 13, 2005
 
14.
A phrase used in answer to a really boring account of an event that is supposed to interest you, but doesn't; meant to be polite, but any ass with a brain would be able to detect the flat sarcasm within.
"And then, I went like no way, and then he went yeah I want you, and then I went but you're parents might come home...can you believe him?!"

"Oh my god."
by Larissa January 15, 2004