Snowwrestler in this context, I've always taken it to mean two comments above whatever comment says "GP" (grandparent/grandposter of current comment). But I've

Snowwrestler in this context, I've always taken it to mean two comments above whatever comment says "GP" (grandparent/grandposter of current comment). But I've seen GP/OP used in slightly different contexts which is sometimes a bit confusing admittedly.