7. "Somebody must have changed my code." , that one caused serious trouble at work when the Senior programmers went flipmode because a consultant made a mistake and there whas no backup.

here is one that happened to me last week:

Boss: I can't receive external e-mails
me: one sec.
Boss: can't you hurry up?
me: hold your horses I can't do magic
Boss : what? you can't do magic?