My dad was one of the two biggest kids in Fulton School. Somebody got the brigh idea of getting him to fight the other biggest kid in school by telling each of them, Bruce/Billy, Billy/Bruce says he can lick you.
They had a semi-proper boxing match behind the school. Billy was African American, and schoolboy lore of the time taught that African Americans skulls were so hard that if you hit an African American on the head, you'd hurt your hand. It's racist claptrap, but you take your advantages where you find them. Billy lead with the top of his head. Dad was taking the worst of it, until a baker, who was watching the fight shouted "upper cut!" Dad took the hint, and knocked Billy down. That settled the thing. There was no malice between them. Billy was Billy Eckstein and dad was one of his biggest fans.
Eckstein was 6'7. Dad was only 6'0. Early growth spurts run in our family. I was one of the biggest kids in school too. But nobody ever had to fight me. Being a girl has it's advantages.