True story... Friend of mine tells me he has a computer that generally does not boot.
I turn on the computer, and it works perfectly fine to which he responds, "how did you do that? Why does it work for you?"
I reply, "Computers generally behave for me."
Friend says, "They must be able to smell fear."
I answered, "It knows it had better behave or I am going to dismantle it! Oh, and every once in a while it doesn't hurt to randomly rip some arbitrary plastic pieces off its chassis just to remind it you're still the boss."