Okay kiddo, so noise rock is like when you have a bunch of toys and you're playing with them really loudly and you're not playing any specific game, but you're just making noise instead.
In music, it's kind of like that. People play really loud and chaotic and don't always follow a certain rhythm or melody like in regular songs. They might use weird sounds and distort their instruments to make it even more noisy.
So basically, noise rock is like a group of musicians just having a lot of fun making noise and seeing what weird sounds they can make with their instruments. It might sound a little bit crazy, but it's also really fun to listen to if you like loud and experimental music!