Jim Carrey Crashes Jeff Daniels' Conan Interview -- It's A Dumb And Dumber Reunion!

Surprise! Jeff Daniels thought he was just going on Conan to promote his new drama series, The Looming Tower.
Little did he know Jim Carrey was waiting in the wings to shock him AND the audience with a Dumb And Dumber reunion!
Ch-ch-check out the insanity (above)!