I think Noodles is trying to become one with the chair. She sleeps like this all the time, she loves having her face and forehead pressed against things, especially corners.
Kind of makes you jealous, doesn't it? I don't think I've ever been as comfortable as they look on a regular basis.
I mean, look at that. Even when he's sleeping the real Bob curls his paws up in pleasure. Heh, it probably helps that he carries around his own bedding.