literally meaning definitely totally. It's used as an agreement and/or for emphasis.
I know it's redundant, that's the point.
Originated in SLOCAL when LMosko used it in a sentence, spread by JC. Brought to NorCal by Soup.
Miss Alyss: "My picture looks like a prostitute mug shot, doesn't it?"
JC: "def totes."
"We def totes need some (pussy/munchies/local awareness/entertainment)"