In Illinois it’s illegal to lock your keys in the car. You only get a parking ticket and a fine of 50$, but in some areas the cops won’t even get the keys out.
In Spain, it is illegal to pick a rabbit up by it’s ears and dunk it in a bowl of custard!
In Salford, England, UK it is illegal to use a telephone wire to strangle a Barbie Doll whilst standing on one leg.