Ahem. Getting us back on topic ...

On a child's Superman costume: "Wearing of this garment does not enable you to fly" (Rats)

On most brands of Christmas lights: "For indoor or outdoor use only"

... and ... some more Illinois laws ...

Crete
Cars may not be driven through the town.

Des Plaines
Wheelbarrows with For-Sale signs may not be chained to trees.

Eureka
A man with a moustache may not kiss a woman.