A duck walks into a hardware store and woddles upto a employee and says "pardon sir do you have any grapes?"
Upon which the employee responds "Sir their is a grocery store across the street where you can get your grapes, this is a hardware store"
The duck waddles off.
Very next day the same duck waddles upto the same employee and asks for grapes again. The employee a tad annoyed this time gives him the same answer. The duck waddles off.
Next day the duck goes to the employee again, this time the employee right away quit upset points to the door and says "If you come back tomorrow I will nail your feet to the ground. "
Yes you are right the duck comes back the next day this time he walks up to the employee who is rewd in the face and smiles looks up at him and asks politely "Do you have any nails?" The employee is taken aback and says "Nope not today"
The duck responds "Good do you have any grapes?"