Bleeding Deacon: a person in the rooms with a negative, moralizing character, who acts like the sole source of wisdom.
“It’s easy to tell if we fall prey to bleeding deaconism. Zealots talk in absolutes, and they just aren’t funny. People or organizations that can’t tolerate a lampooning fear that laughter will crack their clay feet.”
~ Beyond Belief
I used to refer to one such character at “The Pope of AA.”