I'm wondering how and where medical students get their first 'hands on' practice on the opposite sex. Eg male students doing a female pelvic or breast exam. It would obviously make sense to use someone who was used to it and not be embarrassed - though it would be tricky to have your first go in front of your peers. I guess that would make it even worse for the student.
I've heard accounts of first timer physios practising on each other in underwear (and off topic of drama students being encouraged to strip off in front of each other as practice for the real world in the interest of their art)
All good stuff......