The next day, the duck returns and asks, "Do you have any grapes?"
The clerk again says no, and the duck leaves.
The day after that, the duck walks in the store again and asks
"Do you have any grapes?" The clerk screams at the duck, "You've come in
here the past two days and asked if we had any grapes. I told you no every
time that we don't have any grapes! I swear if you come back in here again,
and ask for grapes, I'll nail your webbed feet to the floor!!"
The duck left, and returned the next day. This time he asked, "Do you
have any nails?"
The clerk replied, "No," and the duck said, "Good! Got any grapes?"
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