Duck Searching For Hamburgers At A Pharmacy

A duck walks into a pharmacy and asks the cashier:

"Do you have any hamburgers?"

The cashier replies with a no, and the duck leaves. The next day, the duck returns and once again asks if they have any hamburgers. The answer was still no, and the duck leaves again. This same process continued two whole weeks, everyday, until the cashier finally had enough.

"If you come in here one more time asking if we have hamburgers I will take a hammer and nail you to the wall!" the cashier screams, and the duck leaves once more.

The following day the duck walks in, and asks the cashier: "Do you have any nails?"

The cashier, shocked, answers: "Uhm, no, why?"

The duck says: "Then I'd like to ask you if you have any hamburgers?"