Not only is it illegal to have sex with the lights on, one may not have sex in any position other than missionary.
If one is not married, it is illegal for him to have sexual relations.
You may not have oral or anal sex.
Driving while not wearing shoes is prohibited.
Police radar detectors are illegal.
Citizens must honk their horn while passing other cars.
Children are not to go trick-or-treating on Halloween.
It is illegal to tickle women.
I want to know who passed that last one!