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1.
Miniature skateboards that you can do tricks with your fingers on. They take a lot of patience and practice to get good at fingerboarding.
It's not called Tech Decking, because Tech Deck is a company that produces fingerboards. It's called fingerboarding.
by The Fingerboarder March 21, 2007
 
2.
The act of inserting ones fingers into the orifice of another individual while surfing
Rob: Wow! Can you believe Dowler broke his wrist fingerboarding that AIDS ridden Thai lady boy last night?

Pat: I'm not surprised one bit.
by PuddlesMcMoonshine April 28, 2010