H and I had the two oldest kids before we married. Consequently, they used to tease their younger brothers about being at our wedding and they weren’t invited. Son 2 (child 3) was about 4 when said - “I was too there, I was an egg person in mommy’s tummy and I watched the party through her belly button!” For years after that, they teased each other about being egg people. They said the youngest was supposed to be born first, but he was so pushy, the others shoved him to the back of the line!