1)"You are such a Shank."- insult
2) "Don’t call me Shank, I’m sorry that you couldn’t accept the new me; I am a woman now and I’m proud."- Claim
3) "Yesterday I saw a Shank in front of the Moulin Rouge in Paris, a very horrible and disturbing image."- Gossip
to shank someone means to stab them with a shank. Derived from prisons as inmates would make shanks by sharpening spoons or using a piece of broken glass and wrapping half with duct tape for a handle.
"He shanked that mo-fo good!"