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 08, 2009
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