The Music Box (1932)

Continuity mistake: When Stan pokes Oliver in the eye, Oliver steps backwards and you can see the floor around him is saturated with water. But when we see Oliver putting his shoe into the nails on the piece of wood, the floor is now completely dry.

Ollie: What were you doing up there?
Stan: I was trying to plug it in.
Ollie: That's not the place to plug it in! Give it to me.

Trivia: "The Music Box" is a remake of one of Laurel and Hardy's earlier silent films, "Hats Off", which is now presumed lost.