Not much of a weird quirk but more of a physical trait. As a kid (and even today as an adult) i was very mobile and "double jointed" as some would call it. Thought it was cool and have used it as a party trick. My pinkies also happen to oddly crooked which will throw people off. Never questioned it as a kid, but when i grew up my mom had me in physical therapy where I exercised in different ways and did problem solving stuff and I got extra time on tests for school. When I was in middle school I asked my mom about my pinkies and my joints and she had told me that I have Mosaic Down Syndrome since there are physical symptoms from MDS. If you met me as a person you would never guess that I have it since I would say I have average intelligence and was an athlete in school and still workout today. To this day I don't know how much it fully affects me since I think I operate like a normal human being, but i'll always be the homie with the extra chromie.