Grishno
Grishno is a very quirky character based on the youtuber named Grishno, and commonly referenced as being odd or acting like a child(spontanious or just reactive), and is concerned with many things and not communicating outside the group of people 'A grishno' would likely be accepted by.
Wow that new kid is such a grishno, acting like such a intelligent person, and totally acting like carrot-top the next minute tgirl quirkytransgender