The line that can't be crossed... or at least shouldn't

The line, the great line of which people like myself thrive upon for no apparent reason but it is just so much fun.  I wouldn't know how to live if not for that little blurry of great fun and full out unacceptable.

Honestly, there is nothing I would think of to be completely unacceptable...  if done correctly.

See like, religion, it's only appropriate if the teacher doesn't force the idea upon anyone.  If one were to read it and to be attracted to the idea, it is their own business.  But an outside force of an upright standing rank such as a teacher or a member of the government cannot show favor nor hate of a group no matter what.