CYRT for what it's worth I agree that's what they seem to be after, but in today's exchange climate I'm not going to chance it. 'Sex while possessed, with someone else also possessed' is not a situation where consent can be fully established for all parties at all times, it's an inherently dubcon-ish situation or at least brushes up against the dnw close enough that I'd want a clear 'hey, don't worry about consent issues for this request, we'll assume everyone is okay with what's going on even if they're not always able to say so!' in the sign-up before ever considering writing it.