An Englishman, an Irishman and a Scotsman were taking an intelligence test.
They were all asked The question: "Which bird does not build its own nest?'
'It's The canary,' said The Englishman. 'He lives in a cage.'
'It's The parrot,' said The Scotsman. 'He lives in The zoo.'
'It's The cuckoo,' said The Irishman.
'Very good,' said The examiner, 'how did you know that?'
'Everybody knows The cuckoo lives in a clock,' said The Irishman.