Strange Superstitions Surrounding Friday The 13th

Today is Friday the 13th -- a day that many people don't want to see a black cat or break a mirror.It is not clear when the date became associated with bad luck, but studies show more than 20 million Americans have some sort of fear about it.
According to legend, you should never change your bed sheets on Friday the 13th or you will have bad dreams.
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If you have 13 letters in your name, like Jack the Ripper, you have what is called “devil's luck,” according to legend.

Good thing Mary Jane Cronin has 14 letters.

What are your Friday the 13th superstitions?