Someone who only enjoys life if they are surfing, talking about surfing, or dreaming about surfing. Otherwise, they can be a bit bitchy and not respond to anything you say or do
Guy #1 "Hey dude let's go catch a movie."
Guy #2 "No dude let's go catch some waves."
Guy #1 "You're so surfcentered. Is that all you do?"
Guy #2 "No.... maybe.... fine yea that's all I do."