The sexual attraction to world war 2 general Adolf Hitler or someone who looks similar to Hitler.
Girl 1: Oh my lord......see that guy?
Girl 2: who? That guy with the Hitlermustache?
Girl 1: yeah.................man........he makes me wet........
Girl 2: ew! You Hitlersexual!
An expression used after watching a video of a clip from the movie "Downfall" that involves Hitler where captions are used to tell a story, make a statement, or create comedy.