A Scottish Tragedy

Just received this week joke from MOP bud, Hugh from Scotland:

DAVID CAMERON was visiting a Scottish primary school and he visited one of the classes.

They were in the middle of a discussion related to words and their meanings. The teacher asked Mr.Cameron if he would like to lead the discussion on the word 'tragedy'. So the illustrious leader asked the class for an example of a 'tragedy'. A little boy stood up and offered: 'If ma best freen, wha lives on a fairm, is playin' in the field an' a tractor rins ower him and kills him, that wid be a 'tragedy.' ' 'No', said David - 'that would be an accident.' A little girl raised her hand: 'If a skale bus kerryin' fufty children drove ower a cliff, killing a'b'dy inside, that wid be a tragedy' 'I'm afraid not', explained David - 'that's what we would call a 'great loss'' . The room went silent. No other children volunteered. David searched the room. 'Isn't there someone here who can give me an example of a tragedy?' Finally, at the back of the room, wee Johnny raised his hand... In a quiet voice he said: 'If a plane kerryin' you and Mr.Clegg wis struck by a 'freendly fire' missile & blawn tae smithereens, that wid be a tragedy.' 'Fantastic!' exclaimed David. 'That's right. And can you tell me why that would be a tragedy?' 'Weel,' says wee Johnny 'it his tae be a tragedy, because it certainly widnae be a great loss..... and it probably widnae be a f***ing accident either!