Carmen does that...she often halfway stretches out behind her water bowl in the afternoon and evening, her eyes directy in the light. Because her eyes are in the light, I assume she's awake, but when I sometimes pick her up when she's in the position, she seems to do a "sleepy flinch" thing...and then wakes up and does the normal boa "gaaah! being picked up is scary!" thing.

I <3 my boa. She was such a sweety last night, curled up on my neck while I read the July issue of Reptiles...and then pooped in her cage later, knowing I was going to clean it today. That's my girl!