A sporadic and mighty silly way of psyching people out, first seen in the 1990 film "Captain America" but given a name by the Nostalgia Critic in 2009.
To perform the move, you go to do a normal, mundane gesture such as a handshake or a speech, then suddenly whip out a gun, shout "HEIL HITLER!" as over-the-top as you can, and blast the shit out of everybody.
"Jimmy, now that you're officially a man, let us celebrate with this most sacred of Jewish tradi—HEIL HITLER!" *bang* *bang* *bang* *bang* *bang* *bang* *bang* *bang* *bang* *bang*
-Nostalgia Critic pulling a Psyche Hitler at a Bar Mitzvah