"He's a nice guy, but hanging out with him sucks, he's so fucking brown."
"You liked Pi? Haha, that movie's so brown!"
Because of the many countries that litter South Asia and the Middle East, the term 'brown' is used in teenage circles as a blanket term. (One thing in common of people of these origin is their brownish-reddish-tan skin.)
Not a racial slur. (in most cases)
"I'm going to the mall with all my brown friends."