Don't you hate it when your cat decides to climb on your lap when, say, your on the computer or just happen to be sitting or laying on a surface that isn't smooth but slanted? Then you just like 'Aw. It looks like my cat might not be a total heartless demon after all.'
Then, suddenly the cat starts to slip, just a tiny bit, and suddenly to the cat it's a life-and-death situation and he or she ABSOLUTELY CAN NOT fall off no matter what, an decides the only good thing to do is BRING OUT THEIR CLAWS AND CLING TO THEIR HUMAN'S SKIN FOR THE SAKE OF THEIR LIFE?