Also called TD.
When you shave your pubes and put sparkley lotion on it to keep from getting ingrown pubes. this makes your dick, balls, and surrounding area sparkle and smell like flowers. This is a Twilight Dick.
Guy: Hey I put this lotion on my crotch to keep from getting ingrown hairs and it made me sparkle and smell good.
Girl: Haha Twilight Dick! Im going to call you TD from now on
Guy: Okay :(