Oh god, you're such a talented writer! The sentences you compose are amazing and somehow poetic and Sherlock-scienced at the same time.

And I loved that one:
Cotton at the back of his hand and a hot, damp cock at the front, begging for a hand to wrap around it. Conveniently, Sherlock was in possession of one.
Poetry, Science and humor in a perfect balance.

Oh, and just in case I didn't make it clear - I LOVED that one. Both your Sherlcok and John voice were once again utterly wonderful.