There is a strange German martial arts cult from Berlin that has been incessantly spamming quite a few of the martial arts Facebook groups I am in. They take the traditional name of 'Pahuyuth' and from their own description started as a Muay Thai studio in the mid 70's (and according to them, the first).
They claim to have the only authentic knowledge of the traditional South-East Asian martial arts and a true ancient lineage - constantly trashing all teachers of Muay Boran and similar in Thailand yet unable to clarify their story in anything more than a few vague paragraphs. A certain Sascha Supastrapong (seemingly son of the owner Santhas Supastrapong) has been providing an absolutely constant flow of entertainment, yet the worrying part is the number of people that actually take his claims to heart and the constant number of students the school seems to bring in.