Deliberate mistake: When Ringo sprays his assassin with orange juice, it doesn't reach as far as the sofa. But it still splashes over the inch-high Paul. Even if it had flown that far, Paul is on the far side of the sofa and the angle is impossible.
Help! (1965)
1 deliberate mistake - chronological order
Directed by: Richard Lester
Starring: Leo McKern, Eleanor Bron, Ringo Starr, The Beatles, George Harrison, John Lennon, Paul McCartney, Victor Spinetti
Continuity mistake: The scene where the wheel falls off the car is obviously not the first take as the bottom edge of the rear wing is already damaged from where it hits the ground. It wasn't damaged in the previous shot, when George is undoing the wheel nuts.
Ringo: I like operations. They give you a sense of outlook, don't they?
Trivia: At many points in the movie, the music playing in the background are slightly different versions of the song "A Hard Day's Night." This was the title track from the Beatles previous movie.