I met a Flat Earther last week. She’s a kook.
Shortly before I retired, I was helping a customer at work and it somehow came up in conversation that he was a Flat Earther.
All I could do was think, "Must resist urge to disprove pseudoscience. Not proper time and place."
It was a struggle, but I persevered.
There's a small band of Flat Earthers right here on Free Republic.
I kid you not. I've argued with them.