An informal greeting usually used by Brazilian prostitutes and more commonly Catholic School Girls.
To preform a Brazilian Handshake, first grab the recieving guy's junk, wheather through pants, or direct hand to shaft connection. Next shake his tallywacker up and down for a few good seconds. Never to be confused with a Detriot Socket Wrench.
Guy1: Dude, I was standing in line for lunch, and this bitch comes up and gives me a Brazilian Handshake infront of everyone!
Guy2: Whatever! I bet you're going to tell me she asked for a swingset next!