A childhood belief about getting pregnant

When I was a child, my parents did a thorough job of explaining how babies were made. I knew women had vaginas, men had penises, women had eggs, men had sperm, and babies were made when the sperm and egg got together. However, I didn't realize that the penis had to be inside the vagina for this to happen. When I got a new, male teacher in 2nd grade, I was petrified that his sperm would get my eggs pregnant. I could picture the sperm wiggling across the floor, crawling up my legs, and getting into my vagina, so I would sit with my legs crossed so tightly together my legs would fall asleep. After a few weeks of this, I asked my mom for a little more clarification, and I could tell she felt really guilty!