So little respect for people's stuff....

Back then in our urban environment my buddy had a nice stereo ripped off out of his car once. Somebody told him to epoxy razor blades to the back of the next one he installed to teach the next thief a lesson. Nope he wanted to catch the next unlucky bastard. Epoxied fish hooks the back of the next stereo. So this dumb bastard tries to steal it, gets poked by a fish hook. Tries to jerk his hands out and sets about a dozen hooks in both hands. Hes there all night hangin half out of the car. My friend finds him in the morning, and calls the police. Has to unbolt the damn thing so the cops can take this guy to the hospital get the radio removed from his hands. Early 1980s. This was back in the day when they would steal pioneer shaft radios with cassette decks, and people werent sue happy yet.