Man I can be stupid at times. I sometimes tend to get in elevators... and not push anything.
I'll stand there rocking back and forth, whistling, and wondering why the hell I had to take the slowest fucking elevator on the planet.
Inevitably someone will then want to ride the elevator themselves, so the doors open and I exit thinking "finally!" and then proceed to stand there confused wondering how the lobby made it all the way up to the 6th floor before me.