ROMANA: Don’t you think that’s a bit dangerous?

THE DOCTOR: No, I don’t! What could possibly go — (The TARDIS lurches, knocking the Doctor over) — wrong? You know, I’ve simply got to stop saying that! Every single time I say “What could possibly go wrong?” something goes — oh! (The TARDIS lurches again, knocking both over) It’s uncanny, isn’t it?

doctor who 1963
Doctor Who (1963–1989) British science fiction television series, original run (BBC)
17×05 “The Horns of Nimon,” Part 1 (1979-12-22) [w. Anthony Read]
    (Source)

(Source (Video); dialogue verified)