to me the worst thing ever was when a friend of mine after i opened up to him that i have ocd laughed at me and said bro trust me you dont have ocd he basically thought i was one of the ppl who just say it flippantly  i said no like ive legit been diagnosed by multiple therapists and a psycologist ive struggled with it my whole life it tortures me every day and every moment  he laughed and said you cant get diagnosed for that shit man in my head i was like what  i was incredibly shook and offended  he said i would know if i have ocd and i said i hide it really well he said there you go if you can hide it you dont have it yet another infuriatingly ignorant statement  he then told me that he knows a guy with real ocd that has to adjust the knobs in his car a certain way  and ended it up by saying i just need to eat less sugar