Chase laughed softly at that, hoping the Doctor was enjoying this as he splayed a hand out on the Doctor's chest. "Eighteen, the way you smile when you really mean it and your laugh. Nineteen, the way you save the world and the day and reassure me, all in one go. Twenty, that you jumped out of a tree to impress me. Twenty-one, the way your fingertips feel when they're stroking my cock. I genuinely would never wank again if you would do it for me."