A fairly normal child

    This remarkable child had a keen sense of humour. Thus he seldom began to cry in his best vein till the small hours of the morning; and on these occasions he would almost invariably begin again after he had been officially pronounced to be asleep. His sudden grab at the hair of any adult who happened to come within reach was very droll, too.

    As to his other characteristics, he was of rather an imperious nature. He liked to be waited on.  He wanted what he wanted when he wanted it. The greater part of his attention being occupied at his period with the important duty of chewing his thumb, he assigned the drudgery of life to his dependents. Their duties were to see that he got up in the morning, dressed, and took his tub; and after that to hang around on the chance of general orders.

(from The Coming of Bill, by Sir Pelham Wodehouse)