You know those mornings when it's just great to be alive?
It's cold, but the sun's out. The birds are singing, the Rush Hour Motorists aren't being a pack of wankers. It's a brisk, beautiful morning. Puts you in a great mood.

You walk past a whole bunch of people on your way to your desk, exchanging a few How Was Your Weekends.

You sit down and think Hey, this work thing really isn't so bad.
Then you look down and realise your fly has been undone the whole time. And you've forgotten to wear underwear.