One who is very stupid - a fuckwit.

Dunce originates from when children who refused to learn or just bloody stupid and sent to the corner and wore a giant cone with a red D for dunce on it.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

An expression to someone that you think they are utterly stupid & probably wouldn't compare to a retarded lizard.

Someone who acts like an idiot

The peek of the bottom society. One who is to dumb to understand simple things or is just an all-around idiot
This word can also mean you are an egotistical prick who deserves to be hung in the Third Reich

Young vegan

A new bad word to the equivalent of Dip Shit.

Original Meaning from Dunce hat.