Continuity mistake: The scene is where Duncan is sitting across from Ralph trying to convince him that he's the king. It's a taco stand or something. At the start of the scene you see a bottle of Tabasco sauce on the table. In the next view, the bottle is gone and Ralph gets up to get a bottle of Tabasco sauce from the counter.
King Ralph (1991)
Directed by: David S. Ward
Starring: John Goodman, John Hurt, Peter O'Toole, Camille Coduri
Audio problem: Apparently, Ralph's surname was changed at the last minute from the British Royal Family surname of "Windsor" to "Windham." There are several points in the film, where there is a lip-sync problem, due to the differences of the name, because it has been dubbed.
Factual error: There are numerous references made to the Finnish Royal Family, and they even make an appearance. Only problem is, Finland doesn't have a Royal Family.
Ralph Jones: There's no problem that can't be ignored if we really put our minds to it.
Sir Cedric Willingham: How's it going, Your Majesty?
Ralph Jones: Great. We've got nothing in common and she's got a voice like a tuba. If she had her way, we'd have sex on a bed of nails on national television. But at least the party stinks.
Sir Cedric Willingham: It's I who should be thanking you. You showed me how to be a king.
Ralph Jones: Me? I was a lousy king.
Sir Cedric Willingham: On the contrary. You are a good and decent man, and you've acted honorably. I shall try to follow your example.
Ralph Jones: Thank you, Ced.
