Hobophobia
the fear that whenever you see a hobo you automatically think he will get up and stab you in the balls/vagina; the fear of homeless bozos will rape you.
Guy 1: "I has hobophobia!"
Guy 2: "Whats that?"
Guy 1: "Oh, I'm afraid some homeless person is going to stab me in the dick."
Guy 2: "That's the stupidest thing I've ever heard!"