Like some of the other posters, consumption is a hard limit for me. I personally can't justify the risks.

But full toilet remains my most powerful fantasy and I have found that having my Mistress take a shit on my face is very powerful (pun intended) without most of the risk.

For us it is the ritual. After a Mistress takes a shit on your face there is no going back. It is important to her that I beg for it first, which I do. My Mistress is part of a house and she often brings in a friend, whom I have to pay to witness me begging for my Mistress to shit on my face.

There is an additional fee for full toilet and my Mistress always has me pay it immediately before the ritual. Watching her count the money rocks my boat.