Comedian Conan O'Brien at TBS Night Out in 2016. He recently appeared on YouTube show, <em>Hot Ones</em>.

Comedian Conan O'Brien at TBS Night Out in 2016. He recently appeared on YouTube show, Hot Ones. / Getty Images for TBS

Hot Ones is the YouTube show where famous people answer questions while eating increasingly hot chicken wings. Hosted by Sean Evans, the series is a phenomenon. And Conan O'Brien is its most recent high achiever, and possibly the best guest ever. What exactly makes a good Hot Ones guest?

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