Frasier and Martin in “To Tell the Truth”

Frasier

Dad, we are talking about perjury! When is that ever acceptable?

Martin

Oh, you want an example? Fine! Let's say, uh, what if there was a comet hurtling towards the earth...

Frasier

Oh, for God's sake!

Martin

And you were the only person who could save the earth, but the only way to do it is by lying under oath. Would you do it then?

Frasier

Who am I lying to, the comet?

Martin

Oh, just answer the question!

Frasier

All right, I suppose in certain extreme cases...

Martin

So, then you'd lie?

Frasier

To save mankind from a talking comet, yes!