VIDEO: Molly Shannon & Denis Leary Sing Nonsense Karaoke on TONIGHT SHOW

On last night's TONIGHT SHOW, Denis Leary, Molly Shannon and Jimmy Fallon took turns singing well-known songs like TLC's "Waterfalls," except the lyrics have been replaced with nonsense sentences.

Later, Shannon chats with Jimmy about some fun things she's dared her children to do like asking for jobs at coffee shops, and discusses her movie Me and Earl and the Dying Girl. And Denis Leary talks to Jimmy about his show FX's Sex&Drugs&Rock&Roll which he created and stars in. Check out all the clips below!

About The Tonight Show

In 2014, "The Tonight Show" returned to its New York origins when "The Tonight Show Starring Jimmy Fallon" made its broadcast debut from Studio 6B in Rockefeller Center. Emmy Award- and Grammy Award-winning comedian Jimmy Fallon brings a high-tempo energy to the storied NBC franchise with his welcoming interview style, love of audience participation, spot-on impersonations and innovative sketches.

An American television institution for almost 60 years, "The Tonight Show" continues to be a home to big-name celebrity guests and a stage for top musical and comedic talent. Taking a cue from his unforgettable predecessors, including hosts Johnny Carson and Jay Leno, Fallon carrys on the tradition that audiences know and love - kicking off every show with the iconic "Tonight Show" monologue. Known for his huge online presence, Fallon will brings along with him many of the popular segments, celebrity sketches and musical parodies that fans have grown to love on "Late Night," including #Hashtags, Thank You Notes and Slow Jam the News.

Critically praised Grammy winners The Roots serves as "The Tonight Show" house band.

Photo: Douglas Gorenstein/NBC

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