A duck walks into a feed store, looks up at the guy and says "Got any fish?"

Guys says "This is a feed store. We don't sell fish"..
Duck waddles out.

Next day the duck waddles in and says "Got any fish?".

Guy says "I told you we don't sell fish. We sell feed for cows and horses". Duck waddles out.

Next day the duck waddles and and says "Got any fish?".

Guys screams at the duck "I told you we don't sell fish!!! I'm sick of you coming in and asking for it! If you come in here again I'm going to nail your little webbed feet to the floor!". Duck waddles out.

Next day the duck walks in and says "Got any nails?".

Guy says "No. We don't sell nails.".

Duck says "Got any fish?"...