Okay kiddo, have you ever seen a balloon that's tied up to the ceiling? That's called a ceiling balloon. It's like a regular balloon, but instead of floating in the air, it's tied up to the ceiling so it can't fly away.
Sometimes, people use ceiling balloons to decorate a room for a party or special occasion. They might put a bunch of different ceiling balloons with different colors and designs all around the room to make it look pretty.
Now, the trick to tying a ceiling balloon is to use a special string or ribbon that's long enough to reach the ceiling. You tie one end of the ribbon to the balloon and the other end to the ceiling. Then, you let the balloon float up to the ceiling while holding onto the ribbon. Once it's in the right spot, you tie the ribbon tightly to the ceiling so the balloon stays put.
So, that's what a ceiling balloon is, a balloon that's tied up to the ceiling with a special string or ribbon. It's a fun way to decorate for parties and events.