The act of one's penis drifting below their shorts or underwear.
Daniel had a bad case of snake drift when at his friends house.
snake drift is sliding a penis across anything, like a face, table , carpet, etc.
Guy1: "Yo, I snake drifted across Brittany face last night"
Guy2: "Dude, how was it?"
Guy1: "It was amazing bro. You should try it"