CHCGN
Condescending Hyper-Correcting Grammar Nazi. CHCGNs obsessively correct errors in spelling and grammar, large and small.
"Hey, can I take you out for a drink?"
"Do you mean 'may I take you out for a drink'?"
"Why do you have to be such a CHCGN!"
"Do you mean 'may I take you out for a drink'?"
"Why do you have to be such a CHCGN!"