ELI5: Explain Like I'm 5

Thunder-B (Airsoft grenade)

Okay kiddo, so imagine you're playing a game of pretend with your friends where you all have toy guns that shoot little plastic pellets. Now, sometimes you want to throw something that will make a loud noise and maybe scare your friends a bit. That's where the thunder-b comes in.

The thunder-b is a special toy that you throw like a grenade and when it hits the ground, it explodes with a loud noise. But don't worry, it doesn't hurt anyone or damage anything. Inside the thunder-b, there's a compressed gas that makes the loud noise when it's released.

So basically, the thunder-b is just a fun toy for playing pretend war games with your friends. It doesn't hurt anyone or anything, but it makes a really cool noise when it explodes. Just make sure you're wearing ear protection when you use it, because the noise can be really loud!