I presented this talk September 10 for a Liberty Toastmasters meeting oriented toward humor. Funny isn't usually my thing, but I had a go with the "dismal science." So, yes, I'm exaggerating certain points; however, most of the underlying ideas are based in real economics.
I've written about the potty-training story from Freakonomics before, as well as the discussions about alien invasions from economists and environmentalists. Bastiat's essay about the candlemakers is reproduced in The Economics of Freedom.