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1.
A Van Deinse refers to a great tennis player, especially a tennis player with nearly perfect looking strokes. A Van Deinse is also known for having fast serves and for being an excellent teacher of the game of tennis.
"Wow, that guy's one-handed backhand looks so smooth and effortless. He must be a Van Deinse."

"That guy is a Van Deinse because he has a 130 mph serve."

"Look at how well that Van Deinse teaches those little kids."
by joeyfoey5 February 28, 2008