Getting an erection just before an exam

Did any of you guys ever become erect just before your physical exam, either in anticipation of what was about to happen OR while watching the patient ahead of you receive theirs? Do anyone else around you seem to notice? If so, how did they react?

I'm usually at least chubbed before the doc gets in the exam room.

Happened to me in high school one time. I was literally praying to make it go down, and I was only semi-boned when the doctor came in.

Always, especially if I know it’s a female doctor.

Yes I did once when I was 19 and had to strip to my underwear and I had seen the female doctor at her desk as I walked to the room for the pre employment physical exam. I was sitting there in my titey whiteys and trying to fight it but it wasn’t possible. The doctor came in and immediately noticed but continued on with the entire exam while my face reddened.

Yes, happened to me when I was a teenager, I was at my annual exam at the Doctor office, the Doctor was a nice mature woman she obviously noticed my erection but she said nothing and proceeded with the genital exam. She was very smooth and delicate with the testicles exam and I was very very embarrassed, fortunately she avoided to touch my glans I didn't know if I was able to avoid an ejaculation in that moment. Once at home I immediately went to the bathroom to masturbating thinking about the examination.