I was going to come up with something fun and clever to keep it going but the next line of the real song starts with "cream-coloured ponies" so I think we should probably just leave it here after all.
There are some of the internet's things that we don't need to enumerate.
But what volume would it be? Is it a small amount of glitter or a lot? What's the g/cm³ of glitter? What about tiny bits of uranium? I feel like all the little bits of air between the glitter particles would lower the density compared with just a solid block of uranium which would increase the volume but....
I feel like someone should put some numbers in this thread.