The standard verbal reaction to looking out the door of an airplane at 13,000-ft just prior to jumping out said door. Most often exhibited in females and accompanied by short-term memory loss.
When Christina was lead to the jump door by her tandem instructor, she proceeded to scream "OMFG" and backpedal, as noted by her onlooking friends and the other tandem instructors when all had reached ground level.
by wolf16child July 21, 2011
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When a noob repeatedly uses a cheap tactic, or keeps doing something stupid over and over after being told to stop a million times, you say OMFG NOOB!
-Example 1-

Noob: "l4wlz 1 g0t h34d$h0t!!!~~~ 1m 1337!!!!!!!~~~~~

Guy: "Shut up noob."

Noob: "1 c4n t0k 1f 1 w4nt 2!~~~ lololololololololololololol

Guy: "Dude would you please shut the hell up?"

Noob: "~~lololololololololol~~~ rotfl ~lol!!!!!!!!!! 1337~~~"

Noob: "suiehgo9yew54ighskjhe; gaie4ytivhgpuhgp947g"

Noob: "lololololol lvsdo9ty3wo97yt873y7thg b8tgb!!!~"

Guy: OMFG NOOB!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

-Example 2-

*Noob uses a cheap tactic*

Guy: "Please dont do that."

Noob: "$tfu n008 1 k1(k ur @$$ m0th3r fuck3r!!!~~~"
*Noob does it again*

Guy: "Dude just stop!"

*Noob does it again*

Guy: "STOP!"

Noob: "fu(k u! u ju$ je410u$ cus 1m 1337!!~~~~
*Noob does it again*

Multiple people: "OMFG NOOB!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
by DUH_ July 1, 2009
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Oh my fucking god & jesus.

An added element of the popular "Oh my god"
*Mark gets punched in the face*

Steve: "OMFG&J that bully is mean!"
by cjredskin92 July 23, 2009
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Oh. My. Fucking. God. Faggot.

Pretty straightforward really.
omfg faggot, such a n00b!
by I_beat_the_stig_last_year! January 20, 2011
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omfg boom cannon boom
Person1: did you see that
Person2: OMFG BOOM!
by tristan February 15, 2004
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Comming from the root,
Oh my fucking god meaning Oh my! an exclamation of disbelief
& bawls which is an energy drink.
but is also used as an replacement
for god, to avoid using the lords name in vain.

Hurrah!
No way!
Oh my, energy drink!
whats happening?
dont rape me!!
etc.
"omfg bawls moriah get your penis out my ass" or
"OMFG clare you look like death"
by martha bby! January 14, 2009
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