A childhood belief about classes

When I was in preschool, I heard my father and some people building my fireplace swear, and I got in incidents with my mother for swearing at home. I knew I could get in trouble saying swears at home, so I thought, "If I swear at school, my parents won't know I did it." So at preschool, I recited a line from the book, "Love You Forever" which went, "And they always let him say bad words, like..." And from there on I'd say all sorts of swears. My teacher told me she didn't want to hear those words, but I kept going. My teacher and the director said they wanted to speak to me and my mom after school. I was in trouble. So I learned that swearing at school is actually worse than swearing at home!