Sheldon Cooper: And how are you doing?
Ms Hutchins: Since when are you interested?
Sheldon Cooper: My father told me I should be kind to old people.
Ms Hutchins: How old do you think I am?
Sheldon Cooper: My father also told me if a woman ever asks you that, it's a trap.
Ms Hutchins: Smart man.
Sheldon Cooper: But I'll say 53.