When one unintentionally does something very impressive.

In reference to Doug Niblack. He was surfing off the coast of Oregon when his surfboard hit a great white shark, he landed on the shark and "surfed the shark" for a few seconds before falling off.
"That was awesome! Did you mean to do that or did you just Surf the Shark?"
by Zapper Weisman October 19, 2011
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