I just watched a noot noot compilation video and decided to make this simple rig.
Download: http://www.mediafire.com/file/l4r2q0iwl5d9tqt/Air+Horn.rar
Comes with an original sound recorded from my airhorn. Noot pic is optional, if you don't like it you can just hide it.
Noot pic ... get it?
I'm not forcing you to give credit, but it was highly appreciated