> I dunno about it being flat, but something infinite
> isn't cubic, it has no defined form!
> It has edges on the infinite, so it can't be
No, LKT153, the universe has NO edges!
> The universe ends. What there's after the universe
> is the non-universe...
No it doesn't!
> Suppose the universe is a pulsar it'd increase it's
> size, so it must be finite! but how would it
> increase it's size if it is all there is? Well it
> occupies non-universe... it's weird, isn't it?
There is no non-universe!
The universe is finite, but limitless! That means you could travel for ever and ever in a straight line and never hit a wall. But it does mean you will get back to your starting point! It's a bit like those computer games where if you move out of the screen, you'll end up on the other side of the screen.
This means that you will never find the end of the universe, but it also means that the universe has a certain size. And that size is increasing because of the expansion of the universe. It also means that there is nothing outside the universe, because there is no Outside!
That song sounds like drug induced nonsense to me...