I had one with a female Doctor. Because I was a minor and it was on military base, she had to get a chaperone to watch her check my genitals. She grabbed the first guy walking by in the hall to watch.
So some chubby Samoan guy in fatigues stared at her while she prodded my junk. He was holding an orange soda in one hand, I'll never forget that. I remember thinking I'd rather not have the chaperone.
I guess it worked for the best. If he hadn't been there I definitely would have popped a boner because she was going over me with surgical gloves on and she was a cute MILF.