The hardware store

A duck walks into a hardware store and finds the manager sorting out some Elkay sinks.

He asks the manager, “Do you have any duck food?”

The manager says, “No, we don’t have any duck food.”

The duck leaves, and comes back later. He asks the manager, “Do you have any duck food.”

The manager is annoyed and says, “NO! We don’t have any duck food!”

The next day, here comes the duck again into the hardware store. He finds the manager and says, “Do you have any duck food?”

The manager, exasperated, says, “No, we don’t have any duck food, and if you come in here and ask me that again, I’m going to nail your feet to the floor!” and stomps away.

The duck leaves and the next day, comes in again. He says to the manager, “Do you have any nails?”

The manager screams, “NO, we don’t have any nails!” So the duck says, “Do you have any duck food?”