How to Get Really Smart

A customer at Stingray Fishmongers marvelled at the owner's quick wit and intelligence.

'Tell me, Simon, what makes you so smart?'

'I wouldn't share my secret with just anyone, 'Simon replies, lowering his voice so the other shoppers won't hear.' But since you're a good and faithful customer, I'll let you in on it. Fish heads. You eat enough of them, you'll be positively brilliant.'

'You sell them here?' the customer asks.

'Only $4 apiece', says Simon.

The customer buys three. A week later, he's back in the store complaining that the fish heads were disgusting and he isn't any smarter.

'You didn't eat enough, 'says Simon. The customer goes home with 20 more fish heads. Two weeks later, he's back and this time he's really angry.

'Hey, Simon, 'he complains, 'you're selling me fish heads for $4 a piece when I can buy the whole fish for $2. you're ripping me off!'

'You see?' says Simon, 'you're smarter already.'