Nazis want to exterminate all those non-Aryan people. Retards want to exterminate all those invisible people wielding sharp forks. Nazis traditionally speak with a thick, Slavic accent. Retards traditionally speak with a thick, slobbery accent. Nazis want to lock up all the Jews, gypsies, and homosexuals.
Retards lock themselves under the bathroom sink.
Nazis think they should only breed with other Nazis. Retards can only get some with other retards. In 1936, Jesse Owens humiliated the German Nazis and Adolf Hitler in the Berlin Summer Olympics by outrunning the Aryan Germans and taking the gold. In WWII, the German Nazis almost defeated Great Britain by bombing them in air raids. Every night, the retards of the house get together to drop slinkies and rolled-up socks down the stairs.