Two blondes are hanging siding on a house, one is on the ground cutting the pieces and handing them up to the other who nails them in. The blonde on the ladder throws every second or third nail away, which falls and hits the blonde on the ground on the head. The blond on the ground asks the top blonde "why are you throwing those nails away?" She explains that the tossed nails are defective. "What do you mean they are defective?" The blonde explains that when she takes them out of the pouch if the are pointed towards the house she pounds them in, If they point away from the house they must be defective. The blonde on the ground shouts "You idiot, They are not defective, They are for the other side of the house.
