Do you have Banana?

Boy asked a shopkeeper, “Do you have banana?”

Shopkeeper replied, “I’m sorry, we don’t sell Banana.”

Boy came again after 5 minute and asked again, “Do you have Banana?”

Shopkeeper : No, we dont have!

(After 3 minutes boy comes again)
Boy : Do you have banana?

Shopkeeper : I already told you, No!

(Boy goes away and comes back after few min)
Boy : Do you have banana?
Shopkeeper : No! No! No!

Boys walks away few steps and comes back again.

Boy : Do you have Banana?

(Shopkeeper really irritated this time)
Shopkeeper : If you ask me the same question one more time, I’ll take out your tongue and nail your tongue on the wall of my shop.

Boy : Do you have nail?

Shopkeeper angrily replies, “NO!”

Boy : So do You have Banana?