A childhood belief about getting older

When I was little I didn't know what the word teenager meant. I heard it a lot on tv or when my sister's friends came over. I never once thought to ask anyone what it meant, so I came up with my own definition. According to me at age 5 a teenager was an evil person who broke into your house at night to steal your toys. How I ever got this idea, I don't know. I found out what it really meant when I was about 6 and I was watching a tv show with my sister. It was about this group of teenagers and stuff that they did...so whenever they said the word teenager I would think to myself, if the people who make this tv show know that teenagers exist, why do they let them be on tv? I mean, back then I thought stealing toys was the worst thing you could do. When I asked my sister why this was so, she couldn't stop laughing. She still makes fun of me now. On my 13th birthday, she came up to me and sed "you're a teenager now, go steal someone's toys" i hate her.