Rodney Dangerfield was so unaccustomed to making films he had to have some of the most basic aspects of production explained to them, and even then he didn’t get it sometimes.

When filming his first scene in the pro shop, Dangerfield didn’t understand that “action” meant to start the scene, and he did nothing. After calling for it several times, director Harold Ramis realized what was happening and explained what to do: “Rodney, when I call ‘action’, that’s your cue to come in and do the scene.” Dangerfield replied, “You mean do my bit?”, and Ramis confirmed. He called “action” for a third time and again, Dangerfield did nothing. Ramis finally said, “Ok Rodney, now do your bit,” and Dangerfield sprung to life and nailed his first take, even improvising the line about a free bowl of soup. From then on, Ramis never called “action” for a Dangerfield scene, he just said, “OK, Rodney, do your bit.”