Flash Brown 

Flash Brown is a male pornstar who specializes in interracial porn. Probably one of the most professional pornstars out there, Flash Brown always puts a smile on my face.

Ross: Have you seen the new Flash Brown video yet?
Max: Fo shizzle

Flash Brown by Max "Hillary" Brown July 26, 2016

brown flash 

used to refer to quick robbery by an aborigine in australia. usually in queensland.

'who robbed the house bruce?' "Dunno Sheila I was on the dunny but I saw a brown flash'

brown flash by tadge72 April 25, 2010

Brown Flash 

In the oscillations between struggling not to shit and feeling perfectly fine (somewhat analogous to contractions during child birth), the brown flash is the temporary but dire need to take a shit. Often results in sweating, heavy breathing, and a clenching shut of the asshole to prevent shitflow.

After 2 hours of holding in a shit I was brown flashing incredibly hard. My feelings of intense need to shit were becoming closer and closer together and I knew if I did not shit soon I would ruin a pair of innocent underwear.

Brown Flash by IShitALot September 14, 2014

If it's yellow, let it mellow. If it's brown, flush it down

A phrase used to determine the appropriate circumstances under which to flush a toilet. Urine was to be left unflushed in the toilet bowl while feces were to be flushed right after bowel evacuation. This was used in efforts of water conservation either in the sense of environmental conservation or the saving of clean toilet tank water during power outages in remote areas.

“Man, don’t waste three gallons of water to get rid of a cup of sterile piss.”
“Why is that kindly hippy?”
“Just remember man, 'If it’s yellow, let it mellow. If it’s brown flush it down.'”
“Thank you, sir. Perhaps with the water we save in the crapper you might be able to bathe more thoroughly in the future.”

If it's yellow, let it mellow. If it's brown, flush it down

If it's yellow, let it mellow. If it's brown, flush it down by Capt. Chunkstyle June 5, 2006

FashBrown 

Just a name to call somebody for the fun of it.

A come back in a way.

You stupid FASHBROWN!

FashBrown by LonnBear November 17, 2011