when you make a complete idiot of yourself on the internet and claim that you were being ironic or at the wind up.
When you're sitting in the queue at the doctors thinking what a nice young man he is as the receptionist calls Dr Shipman will see you now.
you're in your 30s and still wear fancy dress at Hallowe'en You start planning for Christmas in October
You think people committing public order offences at or on the way to a football match is just a bit of banter