The man who pointed out that everyone compares everything to Nazis says it's OK to call alt-right protestors Nazis.
Mike Godwin formulated Godwin's Law more than 25 years ago. And it has become a foundational rule of the internet in the time since: as a discussion goes on, the likelihood of someone being called a Nazi becomes higher.
Some have added an extra part: as soon as someone is called a Nazi, they are probably wrong.
But Mr Godwin has said that the white nationalists who took over the streets of Charlottesville over the weekend can fairly be compared to Nazis, given that many of them openly voice support for a Nazi ideology.
"By all means, compare these s***heads to the Nazis," he wrote. "Again and again. I'm with you."
Feeling stupid?