I feel like there must be more to getting Tom Daley’s butt than this relatively simple workout. Of course, it’s just the first in a series of six videos in which Mr. Daley promises to show us how to get the perfect posterior before the summer goes away. Still, I feel he’s holding back. Like some master chef who refuses to give out the secret key ingredient of what makes his recipes so wonderful, I bet Daley is keeping some piece of ass-making wisdom solely to himself. Not that I blame him. Some things are too good to share.