The Private Life of Sherlock Holmes1970

Nikolai Rogozhin:
Mr. Holmes, what you have seen tonight is last, and positively final performance of Madame Petrova. She is retiring.

Holmes:
What a shame.

Nikolai Rogozhin:
She's been dancing since she was three years old, and after all, she is now thirty-eight.

Holmes:
I must say, she doesn't *look* thirty-eight.

Nikolai Rogozhin:
That is because she is forty-nine.