Related Clues:

• 'Not to ___ my own horn . . .'
• Short horn honk
• Warn with a horn
• [C'mon, the light turned green!]
• Parp horn
• Sound the horn going forward and reversing
• Nought drunk by small child? Just a little Coke
• Simple horn honk
• Quick honk
• Train whistle noise
• Noise of a horn
• ___ your own horn
• Opposite of 'boot,' on 'Fashion Photo RuView'
• Little honk
• Quick horn blast