Mei and I, our Training Master took us out once with such in-place...inserted by him while we were both bound in ankle-wrist restraints. From enema to insertion to the few hours spent out browsing around a mall we were both constantly aware of the bases nuzzled between our cheeks, and given the very high heels were locked into, our exaggerated hip and buttock motions made it a very pleasant experience and one where at all times we were always made mindful of who was Dominant and who was Submissive.

One reminder to people, as he carved into our minds 'ALWAYS use enough lubricant, and if you have doubts, add some.'