The Doctor: "Do you remember Gus?"
Josiah W. Dogbolter: "Huh?"
The Doctor: "Gus Goodman. Nice chap. He was travelling with me when you and I first met. You hired an assassin to murder me. He missed and killed Gus instead".
Dogbolter: "Nope. Doesn't ring a bell".
The Doctor: "I'm not surprised. No one ever remembers Gus.
Except me."