The Term "Making A Moon" is a sexual term. It means stretching someone anus out as far as possible; making it into a moon-shape.
(Man 1) How do you want to get to Florida; do you want to fly there? (Man 2) Hell no! With security as paranoid as they are. I don't want some guy Making A Moon out of my butt hole!
by the2ndflood August 1, 2008