cough comet
A projectile that unintentionally flies out of your mouth when you cough. Typically, a piece of food which flies out and usually at an inopportune moment. Also known as a coughmet.
Last week, I was at a conference and Tony was introducing me to a potential investor. He was some Swedish guy and was snacking on some hor d'oeuvres. I was shaking his hand and I think something got caught in his throat because he coughed and something flew out of his mouth right at me. My catlike reflexes allowed me to dodge his cough comet as to avoid having a splotch of chutney land on my forehead.