Do you spin around before you lie down to sleep?
Do you kick you back legs after you poop or pee?
Do you kick your leg when someone scratches your belly?
Pocket: I spin around a few time very settling down. I don't kick my back legs after doing my business or kick my leg.
River Song: I spin, shake, spin again, and fuss for five minutes before sitting down. Occasionally I will kick my back legs after doing my business. I don't kick my leg.