"damn tommy, you really shanked the cat this time, why did you tell melinda that i was allergic to her perfume
to mess up the sistuation, to screw over a person or group of people by narking on them or mentioning someing to the wrong person
""damn tommy, you really shanked the cat this time, why did you tell melinda that i was allergic to her perfume" What is the definition of "shanked the cat"?