Oh My gosh! It's Kelly Link! The awardwinning Author of my favourite short story "Magic for Beginners"!!! You can download some of her stories for free, and even listen to them on the internet. 
Anyway, we're talking about superfluids today. What's a superfluid? Well. It's what you get when you cool helium down really cold. It has strange properties. Watch some videos on it, if you have time... It might help.
Fiona and Jocelyn are back to help me explain. well. try to explain.