So many that have taken my bdsm questionaire and have asked about bathroom control and find it disgusting or want to know what I mean.

I am sure there are many forms of this one but my way is fun for all.

Part of my training is that not only does she have to ask permission to use the bathroom but beg me to accompany her. When in the bathroom and she is naked on the throne I grab her hair and pull her mouth down on my cock.

Now she get to suck as she takes care of other body functions, it rarely takes more then too visit to the loo to change her mind on this practice. Then suddenly she is over the embarrassment and I own a little more of her.