look up any word, like the eiffel tower:
It means chill the fuck out, relax.
guy1: "Yo dude my curfew is at 10 pm we got to leave now!"
guy2: "Chill sauce, its only 7"

(just sounds very cool)
by priten January 15, 2009
Declared By Tonio~
Exciting, dank, amusing, incredible, fantastic, great!

"Dude, this weekend was so chillsauce. You shouldaa been therr."
by Panduhface December 01, 2009