talking to a mate yesterday, on his way to work someone flicked the butt of a *** out the window, which then landed inside his helmet. He then scrambled to get it out of his face, rode past and threw it back in their open window. Last thing he saw was the car pulling over with the two blokes in it frantically trying to find the said cigarette butt.
Moral of the story, if your out riding keep your visor closed, it keeps out many unwelcome visitors.