A woman wants the inside of her house painted and she calls a
 contractor in to get started. They stroll through the house and
 she points out the colours she wants. She says, "Now, in the
 living room, I'd like a nice beige."
 
 The contractor mutters, "Umm, hmm...", pulls out his pad of paper
 and writes on it. Then he goes to the window, leans out and yells,
 "Green side up!"
 
 Perplexed, the woman lets it slide as they continue into the next
 room. "Now in the dining room I'd like an off white, bright and
 airy." The contractor nods, makes another note on his pad of
 paper, then he goes to the window, leans out, and yells "Green
 side up"!
 
 The homeowner is even more perplexed but she let's it slide. They
 move into the next room. She says, "Here in the bedroom, I'd like
 blue; a peaceful, cool blue."
 
 The contractor nods, "Yea, OK, that's fine", writes a note... Yet
 again, he goes to the window, leans out and yells, "Green side
 up"!
 
 Finally overcome with curiosity, the woman has to ask, "Every time
 I tell you a colour, you write it down, but then you yell out the
 window 'Green side up.' What on earth does that mean?"
 
 The contractor shakes his head and says, "Oh, that... I've got
 four blondes laying turf across the street."