To me, it is a matter of stages:
First the anticipation of the enema itself. I get a thrilling tingly feeling all over just thinking about it.
Next, preparing the bag and nozzle (either a colon tube or double inflatable)...the tingly feeling goes up a few notches.
Insertion...probably the most sublime part of the whole procedure...and naughtiness of feeling the large balloon of the nozzle passing through my anus and into the rectum.
The first burst of warm water...and the invasion of the warm liquid through my bowels along with the accompanying fullness that increases by the moment...and the tingly feeling that is reaching an even higher level.
The fullness after the last drop has entered me...and the "hurt so good" feeling that invades my senses and causes me to moan with pleasure and also with pain...the bittersweet feelings that make this an "all body" experience.
The relief of expulsion and the light and healthy feeling that follows...mmmm!
And somewhere in all these feelings is a thundering release of sexual energy...by whatever means.
I think an earlier poster said it best..."hell, I like it all!" 😃
Deb