The further adventures of Sirius the Wonder Cat

Sirius gets restless when the sun is up and wants me out of bed. Often he'll start playing through the covers with my feet which eventually leads to him digging in his claws, which both gets me up and gets a scolding for him. This morning he decided to give new meaning to the phrase "head butt," by launching himself playfully at my rear. Despite the padding of the covers and my seat, he hit bone. I don't know how his head felt, but it hurt me.