CAPTAIN: Ah, well, I'm afraid we can't do that. You see, none of us are very good at that sort of thing, so our trajectory thingie was pre-programmed before we left Golgafrincham. So you're stuck with us all the way, I'm afraid.
ARTHUR: So when are you supposed to land?
CAPTAIN: Oh, any time now. Just about time for me to be getting out of this bath, I should think. But why stop now just when I'm enjoying myself? Anyway, we aren't really programmed to land on the new world, so much as crash on it.
ARTHUR AND FORD: Crash???
CAPTAIN: Yes, crash. There was a terribly good reason for it, but it seems to have slipped my mind at the moment.
FORD: You're all a load of useless, bloody loonies!
CAPTAIN: That was it! That was the reason!