'Dumb and Dumber To' Trailer Debuts (Video)

Jim Carrey and Jeff Daniels debuted the footage on "The Tonight Show."

Harry and Lloyd are back.

Jeff Daniels and Jim Carrey debuted the first trailer for Dumb and Dumber To Tuesday on The Tonight Show, showcasing what their characters have been up to in the 20 years since the original Dumb and Dumber.

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The Farrelly Brothers directed the film, which hits theaters Nov. 14.