There was a farmer who raised watermelons. He was disturbed by
some local kids who would sneak into his watermelon patch at night
and eat watermelons.
After some careful thought he came up with a clever idea that he
thought would scare the kids away for sure.
So he made up the sign and posted it in the field. The next day the
kids show up and they see this sign, it says "Warning!! One of the
watermelons in this field has been injected with cyanide."
So the kids run off, make up their own sign and post it next to the
sign that the farmer made. The farmer shows up the next week and
when he looks over the field he notices that no watermelons are
missing but he notices a new sign next to his.
He drives up to the sign which read: "Now there are two".
