Okay kiddo, let's talk about the trunk on a motorcycle.
You know how sometimes when you go on a trip or go to a friend's house, you need to bring some things with you? Well, the same is true for people who ride motorcycles!
But motorcycles aren't like cars where there's a big space in the back to put things. So instead, some motorcycles have something called a "trunk" or "storage box" on the back.
It's kind of like a box that's attached to the motorcycle, and you can put things inside it. Some trunks are big enough to fit a helmet, which is the thing you wear on your head to protect it while riding. Other trunks are smaller and can only fit things like a water bottle or some snacks.
Trunks can be really helpful if you need to carry things around while you're riding your motorcycle. Plus, they can help keep your things safe from falling off or getting lost while you're on the road!