Popular televised police program, following their endeavors of Australian bogans who drink and drive
~Random Breath Test
RBT Officer - "Where have you been from mate."
Leigh - "Yeah mate, just come from the local."
RBT Officer - "Okay, you've been stopped for a Random Breath Test."
It’s a fifa term for finesse (rb and B are the buttons you use on a controller to finesse shot the football in Fifa) So Rb & B means that you got Finesse.
The word your dumbass friend texts you, until you realize that they were just button mashing and you're actually the dumbass and just that out of the loop with what slang is.