Anal required

[DavisT59]

Not experienced enough to be confident about making a version myself, but I have an idea for a session: that the subject needs to have something up his ass in order to have a good orgasm. Could be just a finger, or a cock or dildo or buttplug, but something. And, he can still get an erection, and I'd be fine with him still being able to ejaculate, but that'd be disappointing, pretty meh. But with something up his ass, he would have a very good, very pleasurable orgasm.

And I guess I'd want him to feel compelled to regularly listen to the file, or whatever would work best to keep it in place (you experienced folks would know best about how to achieve that).

(If this already exists let me know—I found "Curse anal slut," which also sounds fun, but I'm looking for something that affects how he has sex, rather than constant.)