Pre Katrina, my office overlooked our front yard where the pond was. One unusual New Orleans day when we could have our windows open, I overheard the following conversation:
Man and woman, probably husband and wife, looking at the pond and waterfall:
He: "I wonder how 'he' did that. Where is all that water coming from?"
She: "Silly, the water is coming from the garden hose. Anyone can see that. What I wonder is where is it going? I'd hate to pay their water bill."
And these people reproduce.