I have reported this incident in a thread about school medicals. I will summarise it here. I guess it illustrates what can happen when fear makes logical thought 'fly out of the window'.
When I was 11 (1964) I was in my first year at an incredibly strict grammar school. So many rules, all rigorously enforced by nasty schoolmasters who we were pretty scared of. Even more terrifying was the fearsome headmaster who did not hesitate to deploy the cane whenever necessary.
There was a school rule pertaining to not being allowed to remove your school blazer without the headmaster's express permission. During a sweltering summer's day, one of the boys in my class decided that it was a stupid rule and took off his blazer during playtime (recess). He was seen by a prefect and told that he would be reported to the headmaster.
That afternoon, he turned up during our form tutor time. To say that he was extremely displeased was an understatement. He was a very intimidating man. The whole class (standing apprehensively) knew that this was not good news. He launched into a general lecture / tirade about rules / insubordination etc., etc (He had a booming stentorian voice - not unlike the famous actor Brian Blessed).
He then called out the boy who had dared to remove his blazer to the front of the class, informing him that he could now remove his blazer as he was going to receive 6 of the best. It was pretty horrible. Before the caning, the HM tore into him verbally about how dare he defy clear instructions / his authority etc., etc. Canings were usually carried out in his study, in private. Clearly, he was making a point in the most emphatic way. I felt sorry for my classmate as the HM delivered 6 very hard strokes across his backside. He was crying as he walked slowly and stiffly back to his place.
The following morning, during assembly, the HM lectured the whole school about general behaviour. He returned to his theme about non - removal of school blazers without his personal position. Any offenders, he declaimed, could expect a very severe caning.
That same day, I was due to have a school medical. I always got slightly nervous about them as it was. The system was that a prefect collected you from whichever lesson you were in and took you down to the 'medical room'(actually the deputy head's temporarily converted study. You then sat outside on a chair in the corridor until you were called in.
Of course, I knew the routine,but my stomach was churning when the school nurse brusquely told me to undress and put my clothes on a chair in the room. My school blazer!!! What was I to do? The HM's words rang in my mind as did visions of the boy being painfully caned. By the time the nurse returned I had only taken off my tie and my shoes. She was extremely annoyed, telling me to hurry up as I must not keep the doctor, who was a busy man, waiting.
I dithered, I was in a quandary. I did not want to get into trouble for disobeying the nurse, but I didn't want to get caned either. The nurse returned. I had taken off my socks and short school trousers. She was very angry and told me to get the rest of my clothes off quickly. In a croaky, nervous whisper I said that no, I couldn't.
She stormed off to get the doctor. Luckily, he was quite calm. I was shaking and on the verge of tears. If he thought it was funny he did not show it as I blurted out that I didn't want to be caned for taking off my school blazer without permission. He was certainly bemused, but he could tell that my distress was very real.
Of course, he quickly reassured me that the HM's rule did not apply in a medical examination situation and that I would not get into any kind of trouble at all. He just told me to calm down, everything was fine and to undress quickly, so that the nurse could do her checks etc and so that he could examine me. Bizarrely, it was then a great relief to strip off.
Looking back on it years later, I felt embarrassed by my total and utter stupidity. I discussed it with my wife once. She was not totally unsympathetic, commenting that it was typical of ridiculous irrational things like that happening when young boys were terrorised.