Means to beat your meat or jerk off. They call it killing cats because when you jerk off you kill a cat according to certain myths.
Yo. Why you always killing cats man!
by capt.huggyface July 18, 2008
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Why do you want to know?
I'm just killing cats.

She's killing cats over it. (curious about it)
by Daryl O'Reilly March 31, 2007
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To end a relationship that has been dragging on past its rightful end
He is driving me insane

Just kill the cat already!
by kittehbiscuits May 2, 2011
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The act or state of giving a woman multiple orgasms and/or fucking her until her vagina is throbbing red
Hey man, last night when I went over to my girlfriend's house I killed the cat.
by b.l0ve September 21, 2003
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Someone with headphones on, thinking they are singing their ass off, when infact they sound like a cat being killed slowly. Killing the Cat.
by RomelloX December 20, 2013
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