A guy enters a pet shop and talks to the clerk: 'I'd like to buy a very special, unique animal.'
The clerk knows his business. He thinks for a moment and says hesitantly: 'I got something for you... but I am not fully sure... whatever. I have got a parrot. He spent four years amongst sailors on an oil tanker.'
'So what?' the guy inquires.
'He swears in a way that is hair raising even to the most indulgent person.'
'Sounds interesting. I want him.'
'Listen', says the clerk, 'this bird's swearing is really terrible. I can only keep him in the back room, or else he is yelling at my customers.'
'I am a patient guy. I can train him and break his habit.'- So he does. The guy buys the parrot and takes him home. He sits him into the cage. The next day's first lesson: 'Who is a nice boy? Who is a nice boy?'
'Not you! Asshole!' it yells out of the cage.
In the following weeks the bird demonstrates his expertise about any international four-letter-word, yelled in dirty harbour bars between Cape Hoorn and Alaska. One day the guy's mother comes for a visite and gets insulted... I can hardly relate. After half a year the guy's patience is used up.
He grabs the bird, opens the freezer, puts the swearing parrot into it and slams the lid.
'Let me out! LETMEOUTYOUSONOFA #$%!^&' it shouts out of the freezer.
After about thirty seconds the bird becomes silent... the guy stands in front of the device and thinks 'well, I don't want to kill him' and after a while he gets the animal out.
Decently he sits on the finger and says: 'Sir, I appologize for my terrible behaviour of the past days and I promise comprehensive improvement. But would you please tell me... what did the chicken do?'