When we were kids, you may have had a honky-horn with a bulb on the end, perhaps you had bells with gears that strike multiple times as they unwind like one of those self-propelled matchbox cars. Maybe you unscrew your bell halfway so the cracks on the trail ring it as you weave through a crowd of other trail users. Or maybe you ride a folding bike through the airport with a little electric horn. Perhaps you're the best kind of DIY redneck and have fitted a literal tugboat horn to a bike trailor so you can scare the bejeezus out of a coalroller after they dump a load of black smoke on you.

Whatever it is, I want to know about it and why you chose it.