A person who is too curious for their own good. Derived from the phrase "Curiosity killed the cat."
A: "Aren't you curious to know why John and his girlfriend broke up? You should try to ask him."

B: "Hey, I'm no cat killer."
by Paylardo January 30, 2011
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v. Someone who masturbates.

Derived from popular image of kitten jumping through meadow. "Everytime you masturbate, god kills a kitten -- Think of the kittens"
"Katelyn killed a cat last night"
by wen March 9, 2005
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