[When Dean stretches out, Castiel does the same on his side, stretching until he feels a few things pop. It relieves some of the tension built up in his body, hiding in his joints. He'd never realized that simply being human brought about so many aches and pains.]

What is it like? To get a cavity. Have you ever had one?

[It's true, hygiene and cleanliness had never been a concern of Castiel's before now. There's so much time of the day dedicated to it, between everything he has to do for his teeth and then showering. At least his hair dries on its own.]

When I try to get the floss between my teeth, my hands get in the way -- particularly with the molars.