Recently we have received damage to property and we know who has done it but we don't have enough evidence. The police know they did it as well as they told us privately. What I want to do is incapacitate their car, but without actually causing any criminal damage. I had the idea of sticking bananas up their exhaust pipe and ramming them far up it with a broomstick. Would this work and if so how quickly do you think it would be discovered? I just want to piss them off a bit.
Any other ideas are most welcome.