he capered and danced , now turning a cartwheel , now executing a neat back-over flip , as mrs kaspbrak ranted at eddie 's fellow losers and as they shrank , one by one , behind bill , who only stood there , pale but outwardly calm , his hands stuffed deep into the pockets of his jeans ( maybe so no one , including bill himself , would be able to see if they were shaking or not ) .