Idiot on Facebook: “The sun goes around the Earth!”

You: “Well he’s not entirely wrong, because bodies orbit the centroid between blah blah blah–”

One hundred people of varying politeness: “That’s not what he meant and you fucking know it.”

You: “Well here’s a really smart guy talking about centroids–”

Ten exasperated follow-ons: “That’s not what he meant, and you fucking know it.”

You: “Point to where I agreed with anything he said.”

A few diehard troll-hunters: “Where you said ‘he’s not entirely wrong.’”

You: “… yeah but what do words really mean, anyway?”

Stop talking.