1. A nocturnal college student who's secretly a genius.
2. A type of sexual position involving a peanut (It is important that the peanut is unsalted) and a silver 1986 Toyota Carolla.
Bob: "Who's that kid walking around outside at four in the morning?"
Matt: "Oh, that's just Ed. He's such a silver peanut."
Joe: "Wow! That silver peanut last night was amazing! Wasn't it babe?"