"Okay kiddo, so you know how when we meet someone new, we tell them our name? Our name helps them remember who we are. But sometimes people want to keep their name a secret, maybe because they're playing a game or being sneaky. So instead of using their real name, they use a different name called a 'pseudonym'. It's like a pretend name that they can use instead!
Now, imagine you wanted to play a game with your friends where you could all have funny names. You might choose the name 'Superhero Starfish' or 'Princess Penguin'. These names are fun and silly, but they also help your friends remember who you are in the game.
When people use a pseudonym or a funny name, we call it a 'nym'. It's just like a nickname! So whether you're trying to be sneaky or just having fun with your friends, using a nym can be a fun way to hide your real name and stay mysterious."