My friend has a cat that is insane. This is nothing new, most cats are insane. The thing of it is, how he expresses his insanity. Lenin (the cat) will jump onto the top of a door and balance there until a victim walks by. Then he will leap from on high to cling in the person's hair until he is successfully pulled off. This may take an hour and involve selling your soul to satan. He has also been known to jump from an average height couch to the ceiling tiles, which he will sink his claws into and then pull himself up into the ceiling. He will disapear there for much time, to return whenever the hell he feels like it. Now that is a spring-loaded cat.