When confronted with
something totally awesome, a Woah-
Bro will exclaim, "Woaaaaaaahhhhh brooooo".
This is the male equivalent of the "Woo-Girl".
A Woah-Bro may also be a "Dude-Bra" depending on his level of
douchebaggery.
Dude 1: Did you see that girl's
booty?
Dude 2: Woaaaaaaahhhhh brooooo!
Dude 1: I picked up this sick bro-
tank today, take a look.
Dude 2: Woaaaaaaahhhhh brooooo!