Hogfather - Intimidated

Sideney opened his mouth to say, 'But I'm very bad at magical locks,' and then thought much better of it. He had already fathomed that if Teatime wanted you to do something, and you weren't very good at it, then your best plan, in fact quite possibly your only plan, was to learn to be good at it very quickly. Sideney was not a fool. He'd seen the way the others reacted around Teatime, and they were men who did things he'd only dreamed of.

At which point he was relieved to see Medium Dave walk down the stairs, and it said a lot for the effect of Teatime's stare that anyone could be relieved to have it punctuated by someone like Medium Dave.

***

Hogfather - p80