Fuck her ass?

Clara rolled over and got onto her hands and knees. She turned back to look at the Doctor, wiggling her ass at him and giving him that sexy smile.

"Put in in my ass," Clara said in the sexiest voice the Doctor had ever heard.

The Doctor knelt behind her and guided his hard cock up to her bum from behind. He pressed his cock head against her puckered hole and slowly pushed it inside her. Clara moaned and her legs shook a little as he entered her. He was very slow at first, looking down to watch his hard rod enter Clara's ass as he grabbed her hips.

It felt so wonderful! Clara's ass was so tight and the sensation it created all along his length drove him mad with passion. He picked up his pace until his body was slapping into her bottom as he fucked her ass hard from behind.

Clara moaned and squealed and they were sounds that the Doctor had never heard from her before. She was a completely different woman in the throes of passion (as were most women he assumed).

After a few short minutes of this, he could feel a huge orgasm building within him.