When I had a herniated disc and sciatica as a result, I spent a couple months on opioids. And, predictably, I got constipated. First time I ever dealt with constipation in my life- at least for more than a day.
I didn't shit for over a week near the end of it, and I was in absolute agony. I had the constant, immediate urge to shit. Stomachaches, cramps, the works. Tried laxatives. Stool softeners, Coffee. Everything.
When it finally happened, I thought I might have a heart attack during the process. Clothes came off. Suuuuper sweaty. Seeing colors as I strained to just get that very first, rock hard "plug" out.
Man, when it did come out, it truly was orgasmic. My eyes rolled back as it poured out of my body. Mouth agape. Pure bliss.
It ended up being so much shit that I filled the toilet, for the first time in my life. Truly one of my finest moments.
Yeah, it was absolutely orgasmic. Afterwards, I got into bed and slept so soundly that I remember that moment of drifting to unconsciousness years later.