I'm afraid that in my weakened condition, I could take a nasty spill down the stairs and subject myself to further school absences. (2)

9 seconds sound clip from the Ferris Bueller's Day Off movie soundboard.

You can hear this line at 00:52:39 in the Blu-ray version of the movie.

Quote context

[...]

- Have a nice day.

- You're in big trouble, buster! Get down here!

- Ferris. Ferris!

- Who is it?

- You know goddamn well who it is!

- Oh, I'm sorry. I can't come to the door right now. (2)

- I'm afraid that in my weakened condition, I could take a nasty spill down the stairs and subject myself to further school absences. (2)

- You can reach my parents at their places of business. (2)

- Thank you for stopping by. I appreciate your concern for my well-being. Have a nice day.

- Bueller, you son of a bitch.

(BUELLER'S DOG GROWLING AND SNARLING)

[...]