GRAMP: What's this? SHELDON: The list of stuff we’ll need for my Halloween costume.
GRAMP: Pressurized boots? A high-altitude parachute? SHELDON: I’m gonna be an F-16 fighter pilot!
DANTE (dressed as a baseball): Oooo… You got ripped off. ARTHUR (wearing a surgical glove on his head): Is that “magic marker”? SHELDON: Gramp said “a good imagination is the best Halloween treat of all”.