I have never understood what cryptokitties are.
Cryptokitties is a game that was designed to help people get familiar with making transactions on the Ethereum blockchain.
On the cryptokitties website, you can use Ethereum tokens to buy an avatar of a cat: a cryptokitty. Each cryptokitty has unique traits like the color of its background, stripes, moustaches, etc. The fun part is that you can buy two cryptokitties and breed them to create a new cryptokitty with random traits inherited from its parents. Also, someone can pay you Ethereum tokens to borrow your cryptokitty for breeding.
Does this help?
Oh dear, haha! Do adult people do such things? Seriously?
Yeah that helps, thank you :-)