totes down
An incredibly corny way to say, "I'm totally down"; which means, you are in full agreement with whatever event/action the other person is proposing.
Corny Ass MF#1: I'm thinking we should totes go to Coachella this summer!!!!!?????!!!!!!
Corny Ass MF#2: OMG!!! I'm TOTES DOWN.
Corny Ass MF#2: OMG!!! I'm TOTES DOWN.