Why not, In Utah it's illegal to herd sheep in Salt Lake, throw manure in Logan or snowballs in Provo, and elephant hunting is strictly illegal statewide.
But it's hard to beat Singapore where there are lots of illegal things, including:
- Selling gum
- Annoying someone with a musical instrument
- Flying a kite that interferes with public traffic
- Singing or uttering songs that have either obscene lyrics or obscene “ballads”
- Spitting
- Distribution of "obscene" materials (prostitution however is legal).
- Connecting to another user's Wi-Fi
- Forgetting to flush the toilet
- Walking in the nude at home
- Feeding pigeons
- Urinating in a public elevator. In Singapore, some public elevators come equipped with Urine Detection Devices that set off an alarm and close the doors when any odor or urine is detected until the police arrive.
- Taking drugs before you enter the country