What are some old wives tales you've been told by people as if they are fact?

Megan
There are so many old wives tales about pregnancy, and mostly people just see them as fun antidotes. ( more heartburn =more hair) but some people still hold on to them as if they are fact, I'd like to hear the ones you've heard. For example... My husband is terrified of the cord wrapping around the baby's neck so yesterday he comes home from work and tells me I'm not allowed to put my hands over my head because a female coworker told him that it causes that.