Four days ago I had a specimen who arrived with an impacted wisdom tooth, with gum swelling and pain (pericoronitis). I'd prescribed an antibiotic and painkiller for three days, one tablet of each together three times daily, and asked him to come along when the medicines were finished.
Just now he turned up, complaining that he still had pain. I took the X Ray, checked him and couldn't figure out why he should still have pain. I was thinking in terms of antibiotic resistance and chalking out a different treatment plan. Then he said that I shouldn't give him any medicines because he hadn't finished those I gave him the last time. Reason: he didn't feel like taking so many tablets.
Against stupidity of this level even the gods of dentistry endeavour in vain.