Not wearing pants.
New Stebel Nautilus Motorbike Air Horn + Wiring Kit
Piss off your neighbors or freak out the pedestrian that just stepped out in front of you. Deafen the guy on the cellphone that just cut you off in his BMW.
The Stebel Nautilus Compact Air Horn will make sure you'll be heard. Loudest motorbike horn in the world at 139 decibles. Totally self contained, compact alarm, and I've got the de-luxe wiring kit with relay and wiring instructions. I don't have the time to install this before I move, and since I'll be out of the city for the summer, I won't get a chance to use/abuse this. Its totally new, I've taken it out of the package to admire, and that's it.
I want $60 for it, less than what I paid a couple weeks ago. If I can't get that, I'll just return it.