One may not honk another’s horn.

10.32.100 Climbing into another’s vehicle, sounding horn, etc. prohibited without permission.

No person shall, without the permission of the owner or person in charge thereof, climb upon or into, or swing upon any motor vehicle or trailer, whether the same is in motion or at rest, or sound the horn or other sound-producing device thereon, or attempt to manipulate any of the levers, starting device, brakes, or machinery thereof, or set the machinery in motion.

(Prior code § 21-28)