Hogfather - Teatime description

Teatime's face was young and open and friendly. Or, at least, it smiled all the time. But the effect was spoiled for most people by the fact that it had only one eye. Some unexplained accident had taken the other one, and the missing orb had been replaced by a ball of glass. The result was disconcerting. But what bothered Lord Downey far more was the man's other eye, the one that might loosely be called normal. He'd never seen such a small and sharp pupil. Teatime looked at the world through a pinhole.

He found he'd retreated behind his desk again. There was that about Teatime. You always felt happier if you had something between you and him.

***

Hogfather - p25