A childhood belief about virginity

My sister was sitting at the breakfast table one morning near Christmas when she suddenly said to my mom, "Mom, a vegeatarian's someone who only eats vegetables, right?"
"Yes, honey," my mom replied.
"And...a vegan's someone who doesn't eat any animal stuff, right?"
"Yes, honey," said my mom, wondering where this one was going.
"So, mom...what's a virgin?" she asked innocently.
My mom explained it all, but I don't think she quite got it, as she later wrote in one of her school-books, "The lady's name is Layla-May, and she is a virgin"...
Also, once when I was little I found my mom's pills on the bedside table. I asked my dad what they were and he told me they'd stop her having a baby.
For years after I believed that if she didn't take a pill every day, a baby would spontaneously pop out of her belly...