Steven Seagal Syndrome

Someone who claims proficiency in a multitude of subjects with absolutely no evidence in said subjects. Such as martial arts, academic fields and sports

They say stuff like this so that they can seem more credible especially when in arguments or simple discussion, however no one actually believes them and they come across like basements dwelling virgins like Steven Seagal.

Bill: I have spent many years studying martial arts and boxing do you really want to fight me?
Frank: Shut up Bill you have Steven Seagal Syndrome