When Joe pulls his hand out of the mouth, it appears to be missing, causing Anya to scream. He then pops his hand out of his sleeve and laughs. Hepburn’s shriek was not acting— Peck decided to pull a gag he had once seen Red Skelton do, and did not tell his co-star beforehand.
One of my favorite movies and scenes as a kid. Rewatched it again tonight, and it brought me back to my 4 year old self. While my friends had disney princesses, I had Audrey Hepburn.