A term used in anger against someone for any of the following reasons:
1: They are on a snowboard whilst being a dick.
2: They are on a snowboard and acting like they own the whole mountain.
3: They are on a snowboard.
It's pretty easy to say this at just about anyone on a snowboard, because a large amount of snowboarders act like dicks. But sometimes, on the rarest of purple moons, the snowboarder may turn out to be a kind and considerate person. This, however, will not defeat slope discrimination.
Guy 1: "Look at that asshole. Going off those jumps, thinking he's so cool."
Guy 2: "Yeah... Fuckin snowboarder."
*Skier crashes into Snowboarder from behind*
Skier: "God dammit, you fucking cunt!! Get out of the way and pay attention next time!!"
Bystander: "Fucking snowboarder!!"