A mother wakes her son in the morning

A mother wakes her son in the morning

'Get up, son, you have to get to school!'

'But Mum, why do I have to go? I hate it!'

'Tell me two reasons why you think you shouldn't go.'

'Firstly: all the kids hate me. Secondly: the teachers hate me even more.'

'Hmph, excuses! C'mon, go get ready!'

'Tell me two reasons why you think I should go!'

'Firstly: you're 47. Secondly: you're the headmaster!'