What’s the funniest joke you know by heart?

So a duck walks into a bar and asks, “You got any duck food?”  The bartender says, “No! Get outta here!”

The next day, the duck comes walks back into the bar and asks the bartender, “you got any duck food?”  The bartender says, “No! Get outta here!” So the duck leaves.

The duck comes back in again and the bartender says, “if you ask me if I have any duck food again, I am going to nail for feet to the floor!”  So the duck says, “you got any nails?”  The bartender says, “No, i dont have any nails.”  So the duck says, “you got any duck food?”  😆