A combination of psychopath (a person who suffers from mental instability to the point of insanity) and pompous (pretentious, commonly used to refer to someone who speaks in a periphrastic manner).
psycopath, psychopomp, pompous, insane
Teacher: "White privilege blah blah I love to hear myself talk blah blah In Huck Finn, Mark Twain uses the philosophical and socioeconomical meaning of territory to convey a message about the corrupt morals of western society and to symbolize the injustices of racism blah blah I bought a stun gun over the weekend blah blah white privilege."
Class: You're so psychopompous. Stop talking.