When a cat kneads you, it can mean a variety of things. One reason is that it is an instinctual behavior that cats learn as kittens when they knead against their mothers stomach to stimulate milk. Kneading can also be a sign of comfort and relaxation, and cats may knead when they are happy and content. Additionally, cats have scent glands in their paws, and kneading can be a way for them to mark their territory and claim space. Sometimes, cats may knead to make the space they are in more comfortable for a nap or to stretch their paws and legs. When a cat kneads, they may also purr, which is a sign that they are happy and content. Overall, kneading is a normal feline behavior and a way for cats to communicate with their owners and show affection.