Lola: If you grab her by the waist gently she will roll over and attack you.
Charlie: If he is lying down on the floor on his side, I tap the floor and his tail twitches! Every time!
Both of them: Have a horrid habit of going INSANE if you dont wake up early enough to give them attention.
Also, I swear they save their poo-ing until I change the litter
They also enjoy leaping at my poor fish!
EDIT: O yer, they also tear down all my washing from the dryer. Once they took my GFs underwear into the litter tray and buried it too which I found very amusing. She didn't see the funny side though lol