Grah Blah Blah Blah is an exclamation originating in the 757 area of southeast Virginia, or Norfolk, more specifically. The origin comes from the the noise made by a large group of unnamed fly ass thugs in Norfolk, emulating the noise of vomiting.
"Bitch! I keep it real! Grah blah blah blah!"
by roflstomp May 15, 2007