Superstitions - Genuine or fake?

Here is a collection of various slightly more thought-provoking superstitions I have chanced upon. I also explain whether I feel they are true or not, along with a short explanation why.

You will have bad luck if you do not stop the clock in the room where someone dies. - FAKE: There is no logical reasoning behind this statement - it probably originated because "time" had to be stopped when a person's "time" was up.

It's bad luck to say the word "pig" while fishing at sea. - FAKE: And just why can't I say the word "pig" at sea? Wouldn't saying "Babe", "Sow" or something of the like harm as well? Again, no logical or scientific reasoning able to prove this.

A mirror should be covered during a thunderstorm because it attracts lightning. - GENUINE: As mirrors reflect light very well, it makes sense to cover them especially if they are near windows where lightning can be reflected - and probably cause a nasty shock (or even blindness!) to one looking at the mirror.

If you use the same pencil to take a test that you used for studying for the test, the pencil will remember the answers. - GENUINE: True to a large extent, probably because you are used to the pencil (you have used the pencil in making notes, diagrams or doing homework) and are somewhat "inspired" by the pencil in the decision of your answers. But another question: "How about using the same pen?"

Place a hand in front of your mouth when sneezing. Your soul may escape otherwise. - FAKE: So many people have sneezed without covering their mouths at all. You mean that their souls have already escaped? Or are these people just all soulless wanderers now?

You sleep best with your head to the north and your feet to the south. - FAKE: If it made any sense, it would probably have something to do with the magnetic flux of the body (better for the body to face the head north and the feet south). I'm not sure about this one.

If you bite your tongue while eating, it is because you have recently told a lie. - FAKE: May seem somewhat true at first, I agree. But it has been proven that biting one's tongue is largely accidental, caused by the grinding of the tongue against the sharp surfaces of the teeth or by chewing too fast and not paying attention to one's eating.

A watermelon will grow in your stomach if you swallow a watermelon seed. - FAKE: A whole lot of comments! If this were true, I'd have pretty sunflowers growing inside my tummy since I recently ate sunflower seeds. If this were true, there'd be a flourishing orchard through my intestines - fruits like apples, oranges and grapes (grown from any seeds of these fruits I accidentally swallowed). If this were true...

One should always carry something made of wood so that when he mentions something he doesn't want to happen he touches the wood. - FAKE: Truly superstitious. Probably originated from the legend that touching wood will bring good luck and goodwill, warding off any evil at the same time.