Reminds me of the time that Bill O'Reilly argued on national television that tides were inexplicable.

https://www.youtube.com/watch?v=NUeybwTMeWo

I live near a river that flows backwards for some 50km or so with tides. The first time I saw it, I thought I'd gotten turned around because surely water can't flow uphill, right? It's fun to find out that one is so wrong about basic physics.