I had an a**hole do this to me in the parking lot of Wal-mart as I was unloading groceries. He coasted up right behind me and gave me a 2 second blast. You have no idea just how painful this is. Train horns run in the 150-180 db range. Anything over 140 db is over the pain threshold for human hearing. If I had been carrying a pistol that night, I would have unloaded a magazine into his engine compartment. This is NOT a joke.