Ferris: [his recorded message for the doorbell] Who is it?
[pause]
Ferris: Oh, I'm sorry. I can't come to the door right now. I'm afraid that in my weakened condition, I could take a nasty spill down the stairs and subject myself to further school absences. You can reach my parents at their places of business. Thank you for stopping by. I appreciate your concern for my well-being. Have a nice day!