1. (noun) "group think moron", a person who, following groupthink, makes moronic statements. Particularly without actually having reviewed any evidence relevant to a particular controversy and having been told what to think by news media, then proceeding to use a term like "bigot", "racist", "xyzphobe" or "nazi-supporter".
Person A: Pewdiepie is a nazi supporter! Unsubscribe!
Person B: You're such a grouthon! If you'd actually have watched his videos you would have known that they were just comedy! He isn't really a nazi supporter!
by exaeta November 5, 2017
Get the Grouthon mug.