My fantasy would be to be put into a clinic or hospital setting and subjected to every embarrassing or intrusive test and procedure that could realistically be included.
It should be done primarily by a nurse wearing the traditional white uniform instead of the scrubs commonly worn today. If an assistant was needed, either a male or attractive student nurse or technician would be used, whichever added to my apprehension and anticipation. I would of course be wearing nothing but an ill fitting gown that didn't really cover much of anything. The staff would use aprons, gloves etc. as needed.
Things like enemas, bedpans, catheters, rectal temps, injections, NG tubes, IV's etc., maybe even a diaper, would all be fair game. Restraints would be used if needed.
It would be carried out in a clinical way. There would be no sexual contact between the provider and me. Genitals would be handled and manipulated as needed in a strictly clinical way. It would be done in an efficient but not hurried manner, taking as long as was needed to include all needed procedures.
If an overnight stay is needed, I would be awakened at frequent intervals for vitals, medications, injections, and the usual stuff that keeps a patient from getting any real rest.
That about sums it up.