lacking a punchline

I walked through a door today and there was someone just a few steps behind me, so I thought, "I will be a good bloke and hold the door open for them as well," and so I did and then there was a person a few steps behind them, so I thought, "I'm here now, I might as well keep the door open for them, too," so I did and then there was this group of people that walked through the door so I thought, "I can't drop this door on a group of people (even though it would be funny)," so I held it open for them as well. I'm not saying that it was the worst three hours of my life, but it wasn't how I really wanted to spend my day.