The supreme leader of all the Grammar Nazis. He is the ultimate Grammar Nazi and puts all others to shame with his amazing grammatical-ness.

Oftentimes synonymous to 'English teacher', unless your teacher happens to be of the lazy I'm-only-here-for-the-cash variety who spends all of class on Facebook.
Jake might be a Grammar Nazi, but Josh really is the Grammar Hitler.
by How Inane December 12, 2010
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A grammar nazi who will go out of their way to show you your grammar/spelling errors. Will sometimes use profanities.
Person: I'm feeling good.
Grammar Hitler: It's "I'm feeling fine," dumbass.
by Pherabic, Word Master February 18, 2015
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Someone who is has ignorent and biased views following their incorrect grammar refusing to except they have lost the battle.
People say I'm a grammar Nazi but jerry is such a grammar Hitler
by Saint Andrew Petersburg March 4, 2017
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