Spain-splaining is a term a fellow Hispanist has come up with. I have been on the receiving end of the phenomenon quite a few times, so I know what this blogger is talking about.
Once, an acquaintance from Spain decided to prove to me that my Spanish could not possibly be as great as I thought it was.
“Let’s see if you know these very difficult words in Spanish,” he said and proceeded to list them.
The words he thought had to be impossibly complicated for me were: urbanización, existencialismo, colonización, internacionalización, and other similar words.
The poor guy was crushed when he discovered I knew what they meant. He was even more shocked to find out that these words sounded almost exactly the same in English, Russian, and French.