Argentine way to say that something takes you by surprise. Chan is an onomatopoeic word for amazement. The term was popularized and created by the tv show "Indomables" by Roberto Petinatto. Lluvia de chanes literally means: Rain of chanes. It is similar to say "Hot Damn"
Friend 1: Jorge, me gané la lotería, me compre un ferrari y me coj* a tu madre
Friend 2:Lluvia de chanes
Jorge: I´m a kill ya mudafucka
Friend 2:Lluvia de chanes
Jorge: I´m a kill ya mudafucka
by Manuel Freire November 5, 2005