ya pinpoint pupils i notice, itching, slow slurred words for sure. some of my closer friends, i can tell when they do oc because they get a little more emotional. some of them talk a lot, i mean A LOT more. some of my friends like to eat because they say food tastes better. but unless i know someone is high, i probably wouldnt notice most of the time. and i dont think a normal person who you dont know(i.e. a police officer) would be able to tell if you have done oc unless they know you or youre wayyyyyy fucked up nodding and drooling over yourself and shit. i always tell myself people cant tell when im high (hope im right!)