Someone who supports correct grammar for better communication and less misunderstandings. Usually more laid back than a Grammar Nazi. Includes using correct grammar for ebonics and colloquialisms. Many times a grammar panther may correct by example instead of putting someone on blast.
(internet big-shot): you aint noe who your messin wit. im all ova this errbody noe me. there my people.
(rapping grammar panther): You don't know who you're messin' wit'. Cause obviously, you cain't match my wit. So step back and take a seat. This is a spelling match and you're already beat.
(big-shot): A man you ain't gotta go their. You know my school was busted.
(panther): You're right, I ain't had to go there, my bad.
One who uses refined vocabulary, correct grammar, constantly finds themselves correcting grammar and spelling (in forums, chatrooms, tumblr, YouTube, etc.)
First, you have your mild GNs, they're much kinder and respectively tell you about your grammar/spelling that is incorrect.
Then there's your experienced GN, they're much harder on you and constantly browse through pages to reply to people who have terrible grammar and spelling form.
Finally, there's the hardcore GN, only they have earned the right to sPELL liKe thisss and still be refined, respected, not a asshat GN like most internet GN are. They usually reply with a simple correction and move on.
If people's verbal words could be seen like they were typed:
'omg your gay'
"What about my gay?"
randomanon101: lol that coment was so funny. your all so silly.
Grammar Nazi: *comment *you're
Like a grammar nazi, they have no tolerance for bad grammar. Unlike one, they cease to do anything about such bad grammer.
The passive form of their more infamous counterparts.
Person: And they're were no survivors!
Grammer Nazi: *there
GrammarAnti-Semite: *twitch*