Aspirated toast crumbs.
Spent most of the first hour-and-a-half I was upright today hacking and coughing and retching and making Bobbi wonder if she remembered the Heinlein maneuver. I'm sure the stream of Diet Mountain Dew Code Red-colored spit into the trash can was momentarily alarming for observers; pink frothy stuff coming out of people's mouths is usually a Very Bad Sign.
Today's VFTP ProTip: Bread may be the staff of life, but you can't breathe it. Your lungs should be gluten free,