Ok, so get this!
I was sitting in traffic on the A10 near where I live & the traffic was stop starting. I noticed in my wing mirror a police car level with the back of my van and they were looking at the back of the van.
The traffic started moving in the outside lane and the patrol car slowly rolled up beside me, I kinda glanced across to acknowledge their presence. The police officer in the passenger seat looked at me & said “have you got Train Horns fitted on that?”, I smiled & simply knodded. He looked at me and laughed and said “well, go on then!”, so I hit that manual valve!!! The looks on their faces was one of unbelievable shock! He said “bloody hell, you could have warned me!”, the woman police officer in the driving seat looked like she had lock jaw!
At this point a motorcyclist pulled up in between us and said “Was that you?”, to which I replied “yes” & pointing at the police car, I said “He made me do it!”, the guy on the bike said “you scared the living Sh*t out of me!”. We all laughed and then the traffic started moving & I filtered off to the left, leaving the police laughing with the guy on the bike!
I was buzzing inside and wished I had caught it on my 1080p dash cam that I had only just purchased! but had not set it up!