South Carolina has some fun ones:
Horses are to wear pants at all times.
Eating watermelons in the Magnolia Street cemetery is forbidden.
Horses may not be kept in bathtubs.
It is considered an offense to get a tattoo.
No work may be done on Sunday.
An exception to the above law is that light bulbs may be sold.
And then there's this one:
It is illegal to give or receive oral sex in South Carolina.