Why do they move weirdly?

They move weirdly because their bodies are shaped differently than ours.

Imagine you're playing with a toy car, it goes straight forward when you push it. Now imagine your friend’s toy car is all squiggly and bendy, like a worm. When they push it, it doesn’t go straight, it wiggles around! That’s what happens to some people when they move, their bodies are more bendy or stretchy in places we aren't.

Our joints are like the corners of a box, they let us turn and twist, but not too much. Some people have joints that work more like a swivel chair, letting them move in ways we can’t. It's like having legs that can bend backward or arms that stretch way further than ours!

When someone moves in a way our bodies aren't used to, it feels strange, just like if you watched a robot dance. But it’s not magic; it’s just their body working differently, like a special kind of toy car that can wiggle and twist!