In her mouth?

"Cum in my mouth," Clara purred as the Doctor was ready to cum. "I want you to cum in my mouth!"

That was the final straw, and the Doctor pulled out of Clara and quickly stood up. She sat up in front of him as he began jacking his throbbing cock in front of her. She waited there, her mouth open, her tongue out, looking up at him until he started to cum hard. He came onto her tongue, enjoying the vision of his jizz landing on her tongue and shooting down her throat. Half-way through his orgasm, she took over, wrapping her mouth around his head and jerking his cock into her mouth with her hand.

When his lengthy orgasm finally subsided his cock started to soften in her mouth, she cleaned it completely off, and let it fall out of her mouth. Clara's face was flushed partly with excitement and partly now with embarrassment. She was surprised at how much she had let go and given in, and to this stranger too. Though now that her head was clear, she began to put some things together and she thought she knew who Vance really was. She kept this revelation to herself however.

When his breathing began to return to normal, the Doctor was about to say something to Clara when the lighting in the room began to dim. Soon items were disappearing; the window, the wall fixtures and paneling, the couches. Soon he and Clara were naked together in a dark empty space.

"What's happening?" Clara asked, and then she too was gone.

The Doctor began to look around and was going to launch into one of his famous rants, when his vision soon went black and he was aware no more.

He awoke in his clothes, lying on the floor of his TARDIS. He stood quickly and checked himself in the mirror. He was still in the guise of the good-looking young hunk.

"So the game is still afoot?" he asked no one in particular. "Excellent."