1 definition by American Observer

In internet forums, they are the homos who thwart arguments not with logic or intelligence but by pointing out mistakes in spelling or syntax. When this happens, the original post preceding the edited quote, no matter the quality of the conceptual content, or how good of an argument is made, is apparently rendered useless and pointless, for having a simple grammatical error. What the grammar nazis (who should more correctly be termed grammar fags) don't realize, is that it is their role as an editor in a conversation in an informal writing environment that is useless. Even the greatest writers make mistakes now and then--stay off the internet.

They are very similar to the internet troll.
That grammar nazi, or excuse me, grammar fag, just edited the grammar in my post. Wow I didn't realize I was so bad at arguing.
by American Observer January 19, 2006
Get the grammar nazi mug.