Up the Brown is when you stick things, your penis, your tongue, your arm, up your woman's asshole.
It's Friday, so I'm going Up the Brown this weekend. Shawn loves it Up the Brown.
by Jacques Asse June 8, 2009
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Up your Ass - Something to say to tick someone off at the same time hinting they insert something up their anus.
Hey Bob, I hear you like it Up the Brown. Or, Hey Buddy, your a such a dick! Ya well Up the Brown Buddy!
by Randy Vanasse December 17, 2003
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A stentorian emission of flatulence.
Gosh! That was loud. Who's been firing up the brown engine?!?
by fo-sho July 23, 2005
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When someone puts two thumbs up someones anus along with their penis and preforms anal sex.
You better shut up or i'll give you a Two Thumbs Up Charlie Brown
by Constable Headshot January 16, 2008
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To do a thing completely or leave nothing to chance.
Likely related to fully cooking meat until it is very well done.
May have roots in California and has been in use since at least the 1930's.
I got word that the CEO and some of his his staff will be at our fundraiser so we need to do it up brown!
by rubberknife August 15, 2021
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Boy: "So, will you see me naked?"

Mom: "No, I'll just cut a hole in your underwears and stick the thermostat up your brown."
by ljak November 23, 2021
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