It's a very nice buttfuck video.  We can't do it anymore due to my wife's age (82) but when we did, I always did it on a full bladder and after cumming, would then pee in her ass, which she enjoyed and would work her clit to have a nice orgasm when releasing the enema.  Sometimes she would release while I was still in and that was nice.  In the regular cleanout enemas in getting ready for anal, she'd always try for orgasms with those, too, being multi-orgasmic!