When you smoke a large amount of tobacco and get a massive head rush to the point where you feel like passing out. Symptoms include, dizziness, nausea, and vomiting.
Dude that cuban we smoked is gonna make me brown out, im so head rocked!
Those mysterious clumps and drops of fecal matter that somehow wind up under the toiletrim, or on the bottom of the toilet seat after a particularly exuberant bowel movement.
I often use my urine stream to try to power-wash off the brown blowback collecting in the bowl. Its cheaper than Scrubbing Bubbles and much more fun.