Got to use the air horn

[Idaho]

One way street, two lanes headed north. Some old guy, well - older than me so that makes him like---older than dirt, anyway he pulls out into his lane and I am approaching on the right. I'm close enough to see him clearly but he just starts to wander into my lane. I mash the horn button and this very satifying LOUD BLAST convinces this guy that he really should stay in his lane. He probably thought that he was about to be run over by a truck. I liked it.