Why

[Roland]

A young shark and his dad were on the prowl when they see a few people swimming. dad immediately heads downwards and starts to circle. The youngster - bored with this action yet again stops his dad and asks 'Why do we before we kill our food, do the menacing circles, then the raising and showing of the dorsal fin, only to go down below and then attack'?

'Because' dad says' 'They taste better when they have had the crap scared out of them'