Scabs
Two guys are eating lunch in a leper colony. (Leper - really nasty looking with skin disorders)
The guy on the left looks at the guy on his right, barfs, and runs out of the room.
The guy on the right is left in bewilderment. He looks around and says “Well damn, I must be getting pretty damn ugly.”
The lady sitting across from him looks over and says “Don’t worry, it’s not you at all, it was the guy sitting behind you dipping his bread in your neck.”