A city slicker moves to the country and decides he's going
to take up farming. He heads to the local co-op and tells the man,
"Give me 100 baby chickens." The co-op man complies.

A week later the man returns and says, "Give me 200 baby
chickens." The co-op man complies.

Again, a week later the man returns. This time he says,

"Give me 500 baby chickens."

"Wow!" the co-op man replies. "You must really be doing
well!" "Naw," said the man with a sigh. "I'm either planting
them too deep or too far apart!"