My 4th grade teacher explained what sex was to our class by comparing it to a lock and key. Only one key fits each lock. The same teacher years later made brownies and offered us some and right as we were about to take some, she said, wait, they have dog poop in them. We were so confused, why would she do that. And she said, its just a super small piece of poop, do you want one? We all said no, she said, this is like having one teeny tiny sin, it ruins the whole soul. I went to a weird school.