Often used in the internet. Instead of saying awesome or wow. You say OMGBBQ!
OMGBBQ is not always a good thing. Sometimes, if something suprising happens, its ok at to say OMGBBQ.
Holy crap! DoD Source comes out soon!
Oh crap, STALKER got delayed. Damn this is the new HL2. Getting delayed and shiz.
A heightened level of excitement due to the fact you have detected the presence of barbeque sause for those delectable chicken nuggs you were preparing to devour.
Waitress: Here's the chicken nuggets you ordered...
You: Let's see, salt...nope, ketchup...nah, OMGBBQ!!!