masturbating, usually guys jerking off to pornographic images. a common phrase on fark.com.
Please forgive me in advance for the one or two kittens that I may be directly responsible for killing after looking at this boobies link.
by tonmeister February 14, 2005
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To kill a kitten is to masterbate. Comes from the slogan, "Every time you masterbate, God kills a kitten"
Yo don't be killin' kittens in there!

Oh man she is too fine. I best go kill a kitten before somethin dreadful happens
by Steve April 11, 2003
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"Killing kittens" is a very useful euphemism to those who are incapable of spelling the big word "masturbating" correctly.

The metaphorical kitten killing is carried out by proxy, courtesy of Our Lord.
Wanna watch me kill kittens?
by You can't have my name. September 25, 2006
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