a ball?
it's pure white, opaque, and it's icy cold, like a milkshake.
You're very unsure what it is, or what to do with it, but if your mom seems to think it's a good present.
You'd ask her, but you have a strict "figure it out on your own without mommy's help" policy when it comes to things that perplex you. You came up with it as a measure of rebellion against your mom, but when she found out about it, she thought it was a great idea and that it "increased your scientific output". You still have it because, you aren't a baby, you can figure shit out by yourself, it's just you can ask other people, such as Syb and his trolls, and Mew Mew.
Anyways, you don't want to dwell up to much about this "ball" so you put it up one of your butts and move on with your life.