I just realized that "nacho" and "Nazi" are linguistic cousins. (Nachos are named for their inventor, Ignacio Anaya; "Nazi" is from Ignatz, a stock "ignorant bumpkin" character in Bavarian jokes.)
@Gargron That's part of why the mockery works, yeah - people found that the "Nazi" nickname for Ignatz also worked as a shortening of national-sozialist.