It's possible that the half-life of film comedy is five years. "21 Jump Street" was world-class hilarious in 2012, and Schmidt and Jenko were 95 percent as funny when they returned in this year's "22 Jump Street." "Dumb and Dumber," that beloved classic, was the quality standard of downbeat dimwit humor in 1994.
Now, after a double-decade gap, Lloyd Christmas and Harry Dunne reprise their stoogery in "Dumb and Dumber To." The result is simply stupid. This embarrassing revival plays as if the script were written in Comic Sans.