It's an old joke dating back about two years. I'd made a comment to a poster that the planets' orbits were "nearly circular." He responded that I didn't know what I was talking about and that the planets' orbits were "wildly elliptical."
He responded that I didn't know what I was talking about and that the planets' orbits were "wildly elliptical." More specifically, he asserted that you "didn't know beans" about it, which was pretty funny coming from a guy who thought that a circle wasn't an ellipse, that infrared light caused sunburn, and that 1720 was a really, really big number.