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A type of approach that some teachers use frequently when teaching a lesson (most common in US studies). It's where a teacher goes so deep into an example it is as if there is no turning back to bring the conversation back to the original topic. This deep example starts to feel more like a crazy tangeant. It often makes students forget what class they are in.
Colleague: What? How did we go from talking about American industrialization to talking about child prostitutes?

Other Colleague: oh that's just Mr. Phoenix's Fergasonian approach to that topic. Don't worry, he always says you'll be fully prepared for the exam.
by HiggyBare January 10, 2017
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