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A person with an exceptionally active sense of enjoyment, amusement, and/or pleasure.
Group walks by fountain.
Fun-shark: Hey guys, let's go run through the fountain.
Girl 1: Umnmm, no.
Fun-shark: Suit yourself (runs to fountain)
Girl 1 to Girl 2: Does he always get excited like this?
Girl 2: Yea, all the time. He's a real fun-shark.
by lx2036 November 30, 2012
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