You WILL pet me! That was NOT ENOUGH PETTING!
My cat Mau (a 7 year old, 15 pound Siamese boycat) also demands petties on his terms. If I get up to leave before he considers he's had his rightful due of petties, he will chase me across the bed or the floor, slapping at me with sheathed paws. Then I have to get right into his face and hiss at him menacingly. With this, he looks very surprised and backs away. Took me a while to catch on to this. He's fine if you pet him until he thinks he's had enough. He'll let you know that by nipping your arm. So I hiss again and tap him on the snoot. Seems a sad way to end a nice pettie session.