A high-pitched singing-like noise made by rolling the tongue...signifies the presence of an Indian (from India) person. The reason behind this "word" is that it's supposed to sound like Indian music. It's a fairly offensive term.
When we walked into Shibu's Liquor Store, Ted suddenly started chanting "alalalalala!!!" Then Shibu knocked him the fuck out with an empty keg.
"Are you guilty of refusing to state that you had a serious mental problem?"
"Lalalalalalalala, this is not happening, lalalalalalalala, all is well, lalala...