I've only met one guy in my life who talks like that. If you actually hang around surfers, you'll find the words they actually use that aren't common English are words related to surfing, just like in any sport or hobby. You probably don't know what "bonking" is if you're not a cyclist, you probably don't know what DDR SDRAM stands for if you're not a computer freak, and you probably don't know what a "floater" is of you don't surf.
The number of surfers that actually walk around saying things like, "Dude, that was totally awesome brah!" in regualr conversation is probably about the same as the number of anandtech members who say things like "OMG! That was uberleet! roxor!" in normal conversation.