Introduction: Some comedies touch the heart, while others stimulate the mind. Most aim to amuse, a few to enlighten. But only one features Jeff Daniels unloading into a toilet for two-minutes straight after drinking a bottle of laxative. When “Dumb and Dumber” premiered 20 years ago, the Farrelly brothers’ raunchy blockbuster pushed cinematic bad taste to the limit, and earned a whopping $247 million worldwide. As its spelling-challenged sequel “Dumb and Dumber To” debuts in theaters on Nov. 14, here’s a look at the sickest, funniest and grossest gross-out comedies of all time.

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