A term used in Yu Gi Oh: The Abridged Series, to denote a sequence when Yami sticks his hand out, and the whole screen turns like a photo-negative then shatters. Apparently it destroys someone's mind.
Joe: Well, Mac kept telling me about his "awesome skillz" so I mind crushed him.
The crushing or screwing around with other people's minds. Often due to a flare of emotion of one party in a conversation.
Damn, I was talking to Shauney and she was dealing some dope ass mind crush on some fool.