Would you sabotage your own stuff to teach someone a lesson?
I love my coffee, and my wife has gotten into the recent habit of pouring her own cup before the pot is done brewing, leaving me the weakest portion of the brew. I've asked her several times to not do that, and given her the reason why, but she justifies her behavior and continues to do it. I'm now considering damaging the seal that allows her to pour while brewing, so that it will make a mess if she pulls the pot early.
Has anyone else intentionally damaged something they own in order to stop a behavior (maybe even to stop yourself from doing something)?