Related Clues:
- Bit of urban noise
- Toot one's horn
- Palindromic sound effect
- Noisemaker noise
- Horn output
- Squeeze the Klaxon, e.g.
- Horn note
- Respond to a bumper sticker, perhaps
- Sound from a jam
- Show impatience in a traffic jam
- Play on pipes, palindromically
- Car-horn sound
- Bumper-sticker directive
- Sound the horn
- Goose's cry