I work as a sysadmin in the hospital.
and Tuesday. I go to my server room (in the basement) and see this picture on the first floor of the building. The security station, next to the elevator. There are two people sitting at the post - the guard (O) and the driver (B), the lady (D) enters the elevator and begins to tick on all the buttons in the elevator.
A: Woman, you need to press the floor button and then the "Go" button!
D: I know it myself!
Q: How do you play the piano?! to

I forgot where he went! and :)