When a girl is lying face down naked, and she shits before you put it in her butt.
Damn, when I face down brown this girl the other night, it was watery and she stained my sheets.
by Tritru April 7, 2016
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The act of a man having sex with a woman while she is performing a headstand. During this position his penis is inserted into her anus while the man defecates into her vagina.

This is difficult and will most likely cause his feces to enter the vagina while simultaneously dripping down her body and face like chocolate on a cake.
Last night at the orgy I saw someone doing the Upside Down Brown Cake so I played with myself performing a Sleeper Hold because it was so hot.
by FattUnit April 11, 2011
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Chris Brown's new nickname after he beat up Rihanna.
White Guy: Did you see Rihanna's battered up face after Chris Beat Em Down Brown got to her?
Black Oreo: Yea, he was really mad, dude.
by apimpnamedpernell March 12, 2009
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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
by Capt. Chunkstyle May 8, 2006
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A cautionary guide to the water of Springfield USA wherein residents such as the Simpson family reside.
Billy Corgan: Hey, Homer, looks like our next stop is your hometown, Springfield.
D'Arcy: Is it true that we have to bring our own water?
Homer: We got a little rule back home: if it's brown, drink it down; if it's black, send it back.
by -DF- May 6, 2009
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penetrating someone twice in the vagina followed by a sudden switch to the ass (then usually shouting TOUCHDOWN)
dude, i totally gave her a third down brown last night
by milonated February 12, 2017
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