Similar to a grammar nazi, but a nicer term. Most grammar cops are considered to be anal retentive. Grammar cops also have many grammar pet peeves.

I get crap from people at work frequently because I moan and groan about what is written on our website. I just think that if you are going to put up products for sale for the entire world to see, you should at least make a tiny effort at checking punctuation, spelling, and basic grammar rules. So, I am a grammar cop.

There is no shame in being a grammar cop. I am not ashamed to be a grammar cop.