Wondering what today’s tariff increases mean for tomorrow’s economy? Look no further than the 1986 John Hughes classic Ferris Bueller’s Day Off.

In a clip that has gone viral thanks to the tariff war being waged on Americans by its own president, repellent misogynist Ben Stein plays the world’s most boring teacher schooling the world’s most bored student body about the economic fallout when tariffs were imposed in the early 20th century.

Stein drones on about the repercussions of the Smoot-Hawley Tariff Act as students stare blank-faced and slack-jawed; one is even seen drooling onto his desk.

“In 1930, the Republican controlled House of Representatives, in an effort to alleviate the effects of the… Anyone? Anyone,” the teacher says in the movie. “Great Depression. Passed the… anyone? anyone? The tariff bill. The Hawley-Smoot Tariff Act. Which… anyone? Raised or lower?… Raised tariffs in an effort to collect more revenue for the federal government. Did it work? Anyone?… Anyone know the effects?… It did not work, and the United States sank deeper into the Great Depression,” Stein’s character monologues.

On Twitter, one economics professor shared the clip with the caption: “Ferris Bueller is strikingly more instructive than 99.99% of political commentators on tariffs.”

The Smoot-Hawley Tariff Act was introduced following the 1929 stock market crash by Republican politicians Senator Reed Smoot and Representative Willis Hawley. The tariff increases were signed into law by then-president Herbert Hoover, and the United States sank into an even deeper depression that would last for years.

In 1932, Democrat Franklin D. Roosevelt won the presidency, Smoot and Hawley were voted out of office, and the country began the slow process of returning to economic stability.

As the United States imposes steep tariffs on neighboring countries that were once trading partners, the stock market value has plunged and dire warnings of increased prices on many of our cherished goods like timber, automobiles, and food fill the news cycle, we can only wait and see if on this, at least, Ben Stein was correct.