Spoilers: Up to 'Girl In The Fireplace' I think, but it's pretty spoiler-free.
Disclaimer: I don't own 'Doctor Who' or the Doctor or Rose; I'm only playing in the theoretical sandpit that I've grown to love.
A/N: Written in response to a challenge. Just a bit of fun and it's unbeta'd so all mistakes are mine. Originally written 03 June 2007.
"Why do you never sleep?" Rose asks lazily one morning after waking up to find the Doctor wide-awake again next to her in the bed.
"Oh well, there's better things to do than sleep. I can never understand how you humans can sleep for so long anyway, doesn't it get boring after a while?" He asks, letting her head gently rest on his chest.
"Yeah, but you must need some sort of sleep, right?" She says, moving her head slightly to look at him.
"Well…yes, occasionally. A snooze lasting about one hour every two point three days does me just fine, though I've once gone…oooh, a good eleven days without sleep before." The Doctor calculates, distractedly running his fingers through her golden hair.
Rose screws up her nose in disgust, "How can you go that long without sleep? That's just weird." She giggles like a schoolgirl and he can't resist dropping a feather-light kiss on the tip of her nose, which makes her giggle even harder.
"No, what's 'weird' Miss.Tyler, is your sudden interest in my sleep patterns." He jokes, turning so he's facing her under the covers.
"Can't a girl take an interest in her boyfriend's sleep tendencies?" She asks, raising an eyebrow.
"Oh, is that what I am now, eh? A boyfriend? Rassilon help me, I've gone domestic." He chuckles, before wincing at the playful punch that's soon delivered to his arm from his partner. "Ow! What was that for?" He asks, feigning hurt the best he could.
"You! Being all Time Lord-y!" She protests, trying to muffle her giggles.
"Time Lord-y? Since when has that been a word?" He chuckles, giving her a playful prod in the stomach.
"Oh yeah, 'cause you never make up any words. What was that one for 'magic door' again?" Rose giggles once more and her laughter is infectious as they both end up in hysterics.
"Oh, come on, it was even that funny!" Rose makes out between breathless giggles, trying unsuccessfully to slap his hands away as he tickles her.
The Doctor leaves a chaste kiss on her lips as they both calm down, letting her rest once more on his chest as they catch their breath.
"You're crazy, you know that?" She teases him, still trying to suppress the odd chuckle, though now having forgotten the reason why she was laughing in the first place.
"I think you might have mentioned it once or twice," He laughs, "Come on, we'd better get up, I just thought of a place which you'd love to see."