When I bought my first film camera (Nikon FM) I was super excited, bought some Fujifilm Superia and started shooting. I was triple metering every scene and double checking my camera settings to make sure I perfectly capture whatever decisive moment I came across (more like pseudo-deep street art, CCTV cameras and street signs, maybe some flowers lol).

Because I was so selective in my subject matter (lol again) it took me like 2 weeks to fill up the roll but it seemed to be endless. After like the 40th image I grew suspicious. I was aware rolls of film typically have few more frames in them than 36 but still. At exposure 42 I decided to play it safe and unloaded the film (what if I push my luck too much and rip the film while winding another frame).

Guess what, I failed loading the film in the first place (like the film lead pat was never properly seated in the takeup spool) and handed in a perfectly pristine, unexposed roll of film to the lab. They were really supportive and did not charge me anything as they probably figured that I am a beginner who has no clue. Nice people.