A viewer had written into the show, saying he had always wanted to hear Yahoo! Answers sung by a professional singer, and Fallon and McDonald obliged, performing as the Yahoo! Answers Lounge Singers.
Fallon played the piano, asking each question, which were actual queries from Yahoo! Answers, and the star of The Gershwin's Porgy and Bess, Ragtime, 110 in the Shade, A Raisin in the Sun and Carousel crooned the answers to everything he asked.
Check out the hilarious Q&A session below: