Two blondes with hammers, Becky and Sally Ann, were doing some carpentry
work on a house.
Becky, who was nailing down house siding, would reach into her nail
pouch, pull out a nail and either toss it over her shoulder or nail it
Sally Ann, figuring this was worth looking into, asked, "Why are you
throwing those nails away?"
Becky explained, "When I pull a nail out of my pouch, about half of them
have the head on the wrong end and I throw them away."
Sally Ann got completely upset and yelled, "You moron! Those nails
aren't defective! They're for the other side of the house!"