Differing opinions exist on this subject... many believe it to mean "oh my god" and just to be another varient...

However a select few have been chosen to know the truth behind the phenominon...

For the truth is.. zomg actually mean "Zombies on my genitalia"

ZEBRA'S ON MY GRASS!!!!

1. A more intense version of the ever-popular, "omg".

2. OMG Deluxe

ZOMG is neither an acronym nor a word; it is an entity. ZOMG is a mythological figure who wields a sword tainted with the blood of emo kids.

Zombies, OH MY GOD!

OMG, but in zombie form

A variant of OMG but a little stronger and louder.