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3.
What you say when you hear something you totslly don't believe.
Girl1: My friend just got her nose pierced!
Girl2:Whoa-m-g!
by hypo-chix! July 10, 2008
 
1.
Whoa my god!

A variation to omg, but with more shock/hysteria to it.

Can also be written as "whomg"
Whoamg, that chick has three b00bz!
by Schnibble April 06, 2004
 
2.
An overall much more fun version of the phrase omg, mostly because you can make it sound more shocked, and secondly it's not as commonly used.
WHOAMG what the hell is that?
by Kitty_1992 May 28, 2005