Some years ago, I was talking about my cat and said he liked to make biscuits on my lap, and my brother said he'd never heard that term before, but he instantly knew what it meant without an explanation. He has cats, too. If you aren't familiar with the term, there are plenty of cats in this video who will illustrate it. If you need no explanation, you'll still enjoy the cats. Spoiler: it's also called kneading.
While those cats are making biscuits, Dr. Sarah Wooten fills us in on the reasons for this behavior. Surprise- it's not just one reason. Cat make biscuits, of course, because it feels good to them. But kneading also serves their needs in several ways. Whatever gets their human to swoon over how cute they are goes a long way toward ensuring a cat's future as the ruler of the home. -via Laughing Squid