look up any word, like pretty face challenge:
Dark skinned; used by desis to denote African Americans. See also amru,makku.
Dude, did you see that Rajesh? Booty shaking with that kallu chick yaar!
by Aguntuk July 31, 2006
The latest form of salutation utilized in Western parts of the world. According to various news accounts, 33.46% of the Hawaiian population has forsaken the greeting of "Aloha" to make space for the much cooler, "KALLU!!!"
KALLU!!! What's up in your life? How's the stoichiometry going these days?
by Hmmph April 12, 2005