QI, Series G

Stephen Fry:
How old are you?

[Silence, which then turns into laughter]

Graham Norton:
[flirtatiously] How old do I look?

Alan Davies:
[flirtatiously] How old do I feel?

David Mitchell:
Just shows you the effect of this game, though. You ask a question, all four of us think: "That is something I definitely know the answer to, but I've been made so uncertain, and frightened about that, [motions behind himself] that I'm not even willing to give my own age, name, or address".

Dara Ó Briain:
How can it be a trap? How can this possibly be a trap? I am thirty-seven. Look! [hits the buzzer] Thirty-seven! There we go. No points last -

[The klaxon goes off, with the text "DARA - 37" flashing on the screen]