March 31, 2015 - 5:00 AM
April Fool's Day is to comedy as St. Patrick's Day is to Irish culture says the host of Last Week Tonight on HBO.
John Oliver taped this web exclusive while his show is on hiatus this week.
Also today on Trending Now, Elisha Cuthbert tells Seth Meyers her craziest 24 fan story. James Franco talks Kim Jong-un and his movie The Interview with David Letterman. Will Ferrell tells the audience on the Late Late Show to shut up. Will Forte sings an ode to his beard on The Tonight Show, and Madonna talks to Ellen about dating younger men.
**Editor's note: Some people may find the language in the following video offensive.
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