View Comments Want to know the secret to securing a second date, how to truly enjoy the White Castle burger, what people from London are called and more? Sit back, take the music in and let Jimmy Fallon and Mama Broadway teach you. Six-time Tony Award winner returned to The Tonight Show to reprise her hilarious “Yahoo! Lounge Singers” bit, taken verbatim from the site’s Q&A section. McDonald knows it all, including how to test the doneness of boiled eggs (she is the queen of Eggfartopia, after all.) Check it out below!