Hogfather - Table

'Well, that's how it is, anyway,' said Susan. 'Obviously I haven't inherited . . . physical characteristics. I suppose I just look at the world in a certain way.'

'What way?'

'It ... doesn't always present barriers. Like this, for example.'

She dosed her eyes. She felt better if she didn't see what she was doing. Part of her would keep on insisting it was impossible. All she felt was a faintly cold, prickling sensation.

'What did I just do?' she said, her eyes still shut.

'Er . . . you waved your hand through the table,' said the oh god.

'You see?'

'Um ... I assume that most humans can't do that?'

'No!”

***

Hogfather - p187