A man has gone to buy a parrot.....

Man: These parrots seem nice.

         But show me the best and healthy one....

Shopkeeper: Sure sir, I have 3 best parrots.....
                    Soon the shopkeeper brought 3 
                    parrots.....

Man: How much each one of them costs...??

Shopkeeper: The 1st parrot costs 1000$. 2nd parrot costs 2000$.

                    And the 3rd parrot costs 5000$.

Man: That's interesting, but why so expensive....??

Shopkeeper: The 1st parrot can speak many languages and even knows about Windows XP.....

Man: Wow...What about the 2nd parrot...??

Shopkeeper: Well he also knows many languages, plus he knows some things about Windows XP and Linux Operating System....

Man: That's amazing....What about the 3rd one...

         Why he costs $5000....??

         Which languages he knows...??

Shopkeeper: Well, frankly speaking, he just fires bad words and doesn't know anything.

But the other Two parrots call him "BOSS...!”