" ...and just then the thin boy yawned. I had labelled him as an ineffectual sort of lad but he certainly could yawn; it was a stretching, groaning, voluptuous paroxysm which drowned my words and it went on and on till he finally lay back, bleary and exhausted by the effort. "

― James Herriot , Let Sleeping Vets Lie (All Creatures Great and Small, #3)