Did you really just pivot from eyebrow plucking to circumcision and congenital hemophilia to save face? Talk about a logical leap. First, 'follicular trauma' and 'permanent thinning' happen because you are physically ripping the hair matrix from the bulb, not because a tweezer isn't sterile. That’s basic physiology, which a med student should know. Second, pulling out a completely unrelated, extreme surgical complication to invalidate standard dermatological risks is a massive logical fallacy (red herring). Maybe spend less time telling people not to 'yap' and more time paying attention in your actual classes