bum cough
A release of mucous and various toxic particulates from a homeless person dispersed in a broadcast pattern. Normally seen on a crowded mass transit system such as a train or bus.
Damn man that fucking dude just bum coughed you!
Bum cough
Colloquial term for a quick, short fart.
As I waited for my coffee order, I heard the customer next to me let out a bum cough.