My cats new habit, and take full blame for this, is biting my toes as i sit here at my computer cross-leggged.
I have a lamp in here, and started playing with a shadow of a straw on the floor and she went bananas. I'd stop, she'd jump up on the hard drive on the floor, bite my toes, so I'd turn around and play with the straw shadow, then turn back around, bite bite, straw shadow, and on and on. Now I don't wanna have to make the shadow ever 5 seconds, but she just tries and tries, nibble nibble.
I've created a toe nibbling monster.