One day a duck walks into a bar, hops on the counter, and asks the bar tender "You got any grapes?"

"Grapes?" the bar tender answers. "No i dont have any grapes."

So the duck leaves. The next day the duck walks to the bar, jumps on the counter, eyes the bartender, and says "Got any grapes?"

The bartender answers "I don't have any grapes!"

So the duck leaves. The day after that, the duck, still determined, goes to the bar, jumps on the counter, looks the bartender right in the eye and says "You got any grapes?"

"NO!!!" the bartender says. "I dont have any grapes! Now if you come in here again and ask me that question one more time, I'm going to nail your foot to the counter!"

So the duck turns around and leaves. The next day, the duck walks into the bar, hops on the counter, and says to the bartender "Got any nails?"

The bartender, confused, answers "No.."

"Good," the ducks says. "Got any grapes?"