A SoCal term that was popular in the 80's-90's. The Valley is short for the region comprising the San Fernando Valley.
A way of speaking, consistently using the words: like, totally, dude, dudette.
Hey dude are you from the valley?
I'm totally from the valley.
A term coined from the movie "Clueless", describing that something is so sweet, too sweet, that it causes someone to have a toothache.
You are so sweet you give me a toothache.