I think enema showers add an extra element of humiliation

I have had this combined with a bucket and funnel so there wasn't any wasted and that was a pretty intense experience

My only issue is that I know some mistresses who have done this when they have had trouble producing a solid load and under those circumstances I think it's fair to discuss that with the toilet. Not an issue for me but I can imagine for others they might not like the sensation of a liquid shit explosion in the face / mouth

As I say I find it extra humiliating. Especially when the mistress Is taunting you as she holds the enema. And given that an enema can be an uncomfortable experience the deal has always been that I will have to suffer a lot more discomfort than the mistress