A duck walks into a pharmacy and walks up to the counter and asks the pharmacist "You got any grapes?"
The pharmacist looks puzzled and replies "no, I'm sorry. We don't sell grapes here. You'll want to go across the street for grapes."
So the duck shrugs and says "Ok."
The next day the duck walks into the pharmacy, walks up to the counter and asks "You got any grapes?"
The pharmacist is a little angrier this time and says "No, like I said yesterday, we don't sell grapes."
So the duck shrugs and says "Ok."

The next day the duck walks into the pharmacy, walks up to the counter and asks "You got any grapes?"
The pharmacist says "No, we don't sell grapes, and if you come in here one more time I'm going to nail your feet to the floor!"
So the duck shrugs and says "Ok."
The next day the duck walks into the pharmacy, walks up to the counter and asks the pharmacist, "You got any nails?&quo