Please allow me to clear up one common misconception. The best we can do is defend ourselves. By following these four simple steps, you too can get the best possible sleep under the circumstances. First, start in your bedroom about ten minutes before it is time to turn in. You really do not have to worry about clown attacks during the day.
Clowns tend to be nocturnal, preferring the cool night air to the hot sun.
It melts their make-up. Second, spread random things all over your floor. Clowns have really big feet. If you spread enough stuff on the floor, you can hear them sneaking up on you. I like to use things with wires.