I always jerk off slowly while taking an enema, usually in the shower with the shower hose up my asshole. I also play with my tits a lot. The feeling just increases and increases, the fullness, the hose up my ass, my tits hard as a rock, sometimes with binder clips on them, and I carefully take a large enema that way, letting excess pressure leak out my asshole as I go higher and higher. Eventually, I'm full, I then try to hold it in while I jerk off more quickly, that doesn't take long, I generally blast out the water while blasting out the cum at the same time. I just got into the habit of this method when about 10 or 11, and it's always been about the same, it just gets me so excited.
I just have to cum, and I really shoot! I just can't help but cum with each enema. Once I cum, that's about it for awhile. Sometimes I can cum a couple of hours later again, because thinking about the last one gets me so hot. I do enemas in spells, sometimes going a long time without one, because I'm also into anal estiming, that, is really hot. I guess I like most things to do with my ass! LOL!
Sometimes I just have to decide what will be the most fun, estiming, an enema, a dildo, trying to fist myself, a little of each ...