Hogfather (Discworld, #20; Death, #4)

by Terry Pratchett

“And this ‘rebooting’ business? Give it a good kicking, do you?” “Oh, no, of course, we . . . that is . . . well, yes, in fact,” said Ponder. “Adrian goes round the back and . . . er . . . prods it with his foot. But in a technical way,” he added.