Okay kiddo, let me explain to you what a coin-sword is. Imagine you have a shiny coin in your pocket. You can use it to buy things like candy or toys. But what if you could turn that coin into a toy by transforming it into a sword? That's what a coin-sword is!
It's a little bit like when you fold paper to make a paper airplane or a boat. With a coin-sword, you take a coin and fold it in a particular way, so it becomes a little sword that you can play with. It's a cool trick that some people know how to do, and it can be a lot of fun.
But remember, it's important to be careful when you're playing with a coin-sword because it's still a coin, and it's easy to drop or lose. So always make sure you have permission from a grown-up before playing with a coin-sword and use it in a safe place where you won't lose it.