A banjo player called Bill phoned his guitarist friend, Graham. "Hey Graham, I'm trying to do a jigsaw but I'm having real trouble. It's got hundreds of pieces and I cn't get any of them to match. There are no corners and there aren't even any straight sides." Graham says "Have you tried to match the colours up?" "All the pieces seem to be the same colour", replies the banjo player. "Well",asks Graham, "what's the picture on the box?" "It's a picture of a cockrel." answers Bill. "This is no good", says Graham, "I have to come and see this jigsaw for myself." So Graham goes round to the banjo player's house, walks into the kitchen and says " Bill for f***'s sake, put the cornflakes back in the box."