I don't know how I came to belive this theory.All babies are born as girls.You become a "boy" if you sneeze,or cough too hard.It pops out,and you're done being a girl.I used to dread having a cold.When I would sneeze,I would rush to the bathroom,just to make sure I hadn't "popped".
A childhood belief about rude bits

others believed things like this
- I used to think that if you don't close your eyes while you sneeze YOU DIE!!!!— Nutter
- I used to believe that I was allergic to the sun, because whenever I looked at it, I would sneeze.— John 117
- I was once told by a friend at school that if you sneeze you actually die for a split second.— Alex
- My dad always told me to never hold my sneeze and if I did, then my head will explode.— anon.
- I used to think that if I held in a sneeze, my ears would turn inside out.— Lori
- I was told in first grade that if you fart burp and sneeze at the same time you would blow up— bob doodle