KNEADING YOU WITH HIS PAWS
Most people realize that when their cat kneads your stomach with his paws, he is showing his love for you. Usually, the cat will have a very special, loving expression on his face; he may be purring, and he may even be drooling slightly. Your cat is back in touch with his instincts as a kitten when he does this, and feeling the same sense of comfort and warmth that he did as a kitten when he was with his mother. Young kittens knead their mother's nipples to stimulate the "let down" reflex in her so that her milk flows for the kittens to suckle. If his kneading behavior is uncomfortable for you, be sure to keep your cat's nails clipped short, and maybe keep an extra towel around to pad the area he is kneading!
eek, pandy does this, especially this part - Usually, the cat will have a very special, loving expression on his face; he may be purring, and he may even be drooling slightly, usually she drools more than slightly though