Yanci Syndrome

An emotionally unstable individual who will immediately challenge anything you say and never accept criticism. A yanci is also someone who will leave a two- to three-page comment on your social media post without thinking it through and bring up unrelated Bible verses during the chat.

Random person: "Hi, did you know that not all the dinosaurs perished 60 millions years ago.
Yanci Syndrome individual: Funny you say that, because in the Bible God talks about let it be light, he was probably talking about that event blah blah blah..