1. When you go surfing and throw Nerf balls at other Surfers.

2. When you go surfing on a board made of Nerf products.

3. Nurfing is the equivalent of 'gnarly' or 'awesome.
Person one: Hey, want to go Nurfing Surfing today?
Person two: Of course! I love Nurfing Surfing!

or.

Person one: Duuuude, these waves are so Nurfing!
Person two: Let's go Nurfing Surfing!?
by bd wing, bd wong, bd wang November 19, 2011
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