Random Tuesday - Pushing My Buttons

Some of the elevators at my university have a neat feature I haven't seen elsewhere. If you hit the button for a wrong floor by accident then you can hit the button once or twice more again. The button will no longer be lit up and the elevator will no longer stop at that floor. Since I've never seen it before it amuses me to no end... (yes, I have been told I have the maturity of a 5 year-old!)