Don't you hate it when you're at work?

The end.

Wait, no, that's not the end. You're at work – on the bottom floor, because that's where the snack machine is – and you decide to use the restroom. The cleaning lady is in there, with her cart blocking the door. So, you take the stairs back to your floor, the sixth, because you haven't met your daily stairs quota and have to work off this latest snack. Coming around the corner to this restroom, panting, you find the cleaning lady is now there, blocking this door! She beat you there because she took the elevator.

I hate when that happens.