Gas

So I was sitting in my apartment the other day and my doorbell rang...so I look at the camera and I have no idea who it is.

I open the door a crack and this woman is like pushing her way into my apartment and I have no idea what she's saying. Finally she looks up and realizes I have no idea what is going on and says, "gas, you gas"...

Sure...

So it turns out our gas lines get monthly inspections and she was there to make sure I had no leaks or anything.  Good news, my apartment isn't going to explode the next time I light a candle.  Sweet.