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3.
to make a bowl movement.
I have to brown down on the thunder mug.
by Colonel Krackers March 13, 2003
 
1.
This technique involves hovering about 2 feet over a public toilet and shitting all over the seat and surrounding floor. In some instances, one may wish to just shit on the floor, in a corner of the stall that is nowhere near the toilet. For added effect, smearing the shit all over the facilities could be useful, but it comes with a cost (shit on your hands). The first time I performed this move, I left a soiled pair of underwear hanging from the faucet. This move is similar to a wet down, but the use of feces ensures that this move will be remembered.
Guy 1: Oh man, this McD's gave me the McRuns so bad that I couldn't even finish my meal before I was running to the bathroom.
Guy 2: Well you shouldn't have eaten 6 double cheesburgers.
Guy 1: You're telling me. What's worse is that the toilet seat had piss on it.
Guy 2: Did you give Ronald McDonald a brown down?
Guy 1: Fuck yeah. I even left my soiled underwear hanging from the faucet.
Guy 1 and 2: Wicked!!!
by Jim W September 03, 2007
 
2.
A breakdown where you shit your pants because its so intense!
"waoh this acacia strain song has the biggest browndown!"
by Jasperror May 06, 2009