An ornithology student who’d worked hard at his books throughout the year, was dismayed to find that the main part of the final exam required him to recognise a number of stuffed birds which had been draped so that only their legs and feet were showing.
As he hadn’t made a detailed study of birds’ feet he found the task quite impossible, so he threw down his pen in disgust, handed in his paper and marched towards the door.
He’d almost reached it when the supervisor called, “Wait a minute young man, what’s your name?”
Turning to face him, the exasperated student pulled up the legs of his trousers to expose his pale shins and shouted, “You guess mate, you just guess!”
~ John Coleman