A bookie was walking the grand national course when at the water jump he sees a little girl with a rod and a float in the water. "You'll never catch anything in there" he said.
Girl asks "what odds will you give me ?"
Bookie "20 to 1"
Girl "Okay . . . . here is £1"
The bookie takes the money and as he is walking away the girl calls him back.
He turns to see a flat fish on the hook.
"Fair enough, here you go." as he hands over £6.
Girl, "I should get £20 plus my original £1 back, though."
Bookie "Sorry, but you only get a quarter of the odds for a plaice."