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Wanking. From the motion of stabbing an invisible cat on ones lap.
That guy never comes out anymore, hes always stabbing the cat!
by Bewesy November 12, 2003
a really cool way to say jacking off

also somethng you can say in front of your parents becuase they won't get it.
"Dude that guy is fucking stabbing the cat in the mall!!!"
by Haley ann January 07, 2008