Something happens to me that I can't explain

Before the accident, when I started preparing the tools for the enema, I already had an erection.

I almost always masturbated during the enema, whether I did it myself or my wife participated.

Given that I have regular erections when I have sex or when I decide to masturbate, the strange thing and I can't explain is that since I've restarted the "activity" (even if after a fairly long break) I can no longer have an erection while I do the enema. Only while I'm having an enema. But if I massage the penis, even if it is not erect, I can have an orgasm. Isn't that strange, considering that nothing else has changed?

Yes, a mystery… As for me; once the double balloon enema nozzle began to be used; erections during my enemas ceased. Even when the balloon nozzle was not used; I would not get erect, and if I had one before the enema, it would be gone. That began when I was in my mid-40's and continues to this day.

@selfmadetoy, I share your feelings here. I had cancer of the bladder, and when they removed as well my prostate and some colon, the idea of a raging hardon became a part of my past. However, my penis is still hypersensitive, especially during an enema, although it does not get erect. I can still masturbate or have my wife masturbate me, and I have a decent orgasm. We are accommodated to that. At 77, I'm happy with that.

Had radiation seeds implanted to kill my prostate cancer, so had shot to remove my urges and dry me up, then 120 seeds implanted so now couple years later can get moderately hard but not ejactulate but have anal orgasm if stimulate P spot. Cancer free but at cost of erections and ejaculating but alive so guess that good. Bring on the enema to warm my protate spot.