Midnight Madness: Ficlet Prompts Requested

So, I have reached the point of sleep deprivation where I do foolish things. I have talked myself out of a post like this several times, with litanies of the projects I should work on and contribute to rather than doing something this self-indulgent, but I think I've said "should" to myself a few too many times. So.

First twelve respondents, please give me a character, pairing, or threesome, and a prompt for a ficlet involving them, the pornier the better (AU settings, genderswap, etc, welcomed, as are timestamps and prequels to stories I've written). The fandoms I can write are evident in my Memories, and, well, let me post this already.