I once missed a flight to London from Beijing because I went out drinking at 2pm the day before which I figured would be quite safe.
My flight was at 9am next morning and I was still drinking at 2am next morning, by the time I got back to the hotel I was too drunk and tired to pack. I had been living in the hotel for 4 months so there was a lot of shite to sort out.
Needless to say I didn't make the flight, I actually only missed it by 7 minutes which is double fustrating because it's still on the tarmac and you've only missed the gate close.
I tried everything from bribes to crocodile tears to stamping my feet and throwing one of my bags at a wall.
Needless to say I didn't make the flight.