It is the illusion of former doormen, pimps, criminal wankers etc. to believe they would be qualified to "teach" because they are born natural English speakers. Unless educated, a pimp remains a pimp. Huomian shifu, also known as The Wanker from degreediscussion.com, is not qualified to teach at all.

Perhaps a little reluctantly, because even though the builder with the belly and the ignorant failed soldier sound most unsavoury, they do half qualify as FT's, being both natural English speakers.