Just a few here in the Commonwealth (notice it is not the State) of Pennsylvania:
In PA:
It it illegal to sleep on top of a refrigerator outdoors.
You may not sing in the bathtub.
Fireworks stores may not sell fireworks to Pennsylvania residents.
AND.............. My personal favorite, regional law from Ridley Park right outside of my beloved Philly (Drum roll please).................
You cannot walk backwards eating peanuts in front of the Barnstormers Auditorium during a performance.