Okay, so let's imagine you have a tall tower of blocks. Each block is a little piece of something, like a toy or a candy. Now, you want to break this tower down into smaller pieces, but you don't want to break any of the individual blocks - you just want to take the tower apart.
An indecomposable distribution is kind of like a tower that can't be broken into smaller parts. This is something that's really important when you're working with numbers and trying to figure out how they can be split up.
Let's think about it like this: when you have a big number, you can think of it as made up of smaller numbers. For example, 10 is made up of 5 and 5. But if you look closer, 5 is made up of 2 and 3. And 2 and 3 can't be broken down into any smaller numbers, so they're indecomposable.
An indecomposable distribution is like that - it's made up of a bunch of pieces that can't be broken down any further. This is really helpful for people who work with numbers and try to figure out how things can be split apart or combined together.
So basically, an indecomposable distribution is something that can't be broken down into any smaller parts - it's like a tower of blocks that can't be taken apart any further.