7. Turn your coworker's world upside down
把你同事的電腦桌面倒過來

This one's not a show-stopper, but it is super easy, and tame enough for almost any office. When your (hopefully good-natured) coworker heads off for a bathroom break, hit Ctrl+Alt+Down Arrow to flip the screen on his or her PC upside down. The antidote is simple: Ctrl+Alt+Up Arrow… but it's probably going to take them a frustrated (read: funny) five minutes to figure that out.
這個不是那么好笑，但容易操作，而且可以在任何辦公場所使用。趁你的同事去廁所的時候，同時按住Ctrl+Alt+向下的箭頭就能將電腦屏幕上的內容顛倒過來……返回操作就是Ctrl+Alt+向上的箭頭，不過他們可能要花5分鐘才能將屏幕調回來。