I've had fans come and knock on my door. I'm usually polite, but I'm usually very direct and say, 'It's not cool that you come here uninvited.
Nobody can be as agreeable as an uninvited guest.
Uninvited guests seldom meet a welcome.
Uninvited guests are often most welcome when they leave
we know that the Furies do not come uninvited.
Happiness comes uninvited: and the moment that you are conscious that you are happy, you are no longer happy.