Talk about sensory overload. The Doctor explored just how hard he was, the feeling of him urging her for more as she kissed him back. She moaned a little into his mouth, but she wanted more.
The Doctor pulled away from his kiss, a flush on her cheeks as she decided to be a little selfish and pushed his shoulder up with her free hand, urging him back to standing. Then she dropped to her knees. She found she desperately wanted to know when he felt like in her mouth - the Doctor enjoyed exploring, after all.
She leaned forward and took him into her mouth, reveling in his heat as her tongue danced around his warm flesh. She let out her own little sound of enjoyment against him as she discovered she liked this a lot.