Spewage
The stream, sometimes violently projectile-like, of today's (or yesterday's) semi-digested consumption. It's made possible by sickness, food that didn't agree with the stomach, that last tequila shot (that you knew you shouldn't take but didn't have the will to disrespect by leaving undrunken), seeing poor souls wearing white after Labor Day (bless their little hearts), thinking some heinous disgusting thought, other sensory overloads like witnessing or smelling other spewage, or anything that makes you vom. In sum, the upper body counterpart to sewage, but expelled from the mouth.