4 ms·
What is OP (the article?), and what is undermine?
by falsedan 9y ago
What is OP (the article?), and what is undermine?
- gknoy 9y agoI've always taken "OP" to mean "Original Poster" or "Original Parent" -- similar "GP" is often used to mean "Grandparent Poster", as in the post whose reply we are replying to. :)