A brown walmart is when a girl kisses a smiley face off of another girl's ass. The smiley face should be drawn to resemble that of the wal-mart "smiley" and drawn with feces using the tip of a penis that was just removed from the girl's anus.
"So, I was in a threesome and the girl got shit on my dick, but it's okay because I made her sister clean up the brown walmart."
by #sysadmins December 2, 2009