I was once in a car driving through the Rajasthan desert and, with not a soul seen in the last hour, the driver still habitually tapped his horn every couple of minutes.
What... That sounds surreal. He was honking for no reason? Was he aware he was doing it?
In India it's somehow considered a safty measure to just honk all the time. You'd see big trucks with stickers "please honk" on their rear-bumper, sepposedly they won't know you're there otherwise.