I saw a post earlier about the old tale about not putting our hands over our heads because the umbilical cord will get wrapped around the babies neck. I always think that's funny and my mother has warned me about it since the day she found out I was pregnant. So much so that now my SO is scared about it!!
Well here's another one from good ole mom. She's from the south and has a lot of these types of theories.
I told her that since the weather is cooler, I was going to pull up some of the overgrown weeds in her front yard and get some pebbles to put down so they won't grow back. She said she was scared that there may be snakes in the weeds because they're so tall and thick and she didn't want me to do it. Of course I asked why. She said because snakes follow pregnant women. And as I laughed, she insisted, with a straight face, that she saw this happen to a great aunt of mine, when she was younger. My mother was completely serious! So...beware of snakes! And don't raise your hands above your head!