A duck walks into a bar

A duck walks into a bar, and asks the bartender, “do you have any grapes?”

“Nope” responded the bartender, “try somewhere else.”

The duck walks out and back in, “do you sell grapes?”

“I told you already I don’t” responded the bartender, “stop bothering me.”

The duck walks back out and then back in again, “stop right where you are” the bartender screams “you ask me again if I have grapes I will take a hammer and nail your feet to the floor.”

The duck walks out and then back in again, “do you sell nails?” he asks “No” responded the bartender.”

“Do you sell grapes????”