The clue is in the title

Rating: 8/10 (9 December 2014)

I remember when Jeff Daniels was doing interviews for 'Dumb and Dumber,' he stated that he had to mentally 'dumb himself down' when preparing himself for the role of Harry. I think that's what anyone contemplating watching Dumb and Dumber needs to do in order to appreciate it.
Okay, so Jim Carey is the star (Lloyd) and he and his equally-clueless best mate Harry set off on a road trip across America in order to return what he thinks is a missing briefcase to its rightful owner. So, basically it's a 'road movie.' Now, by definition road movies are pretty 'low on plot.' The 'story' is simply the two dumb guys moving from one daft setting to the next. Yes, it is low on story. But it is pretty damn funny. And isn't that the main thing? It was made at the height of Jim Carey's fame, therefore he was somehow still fresh. If you're looking for low-brow humour then you'll find what you're looking for here. Yes, it won't tax you mentally and, by the time the credits roll, you may actually be thinking with a few less IQ points. However, if you're prepared to trade a few brain cells in for a lot of laughs then you've come to the right place.
Best dead bird laughs since Monty Python's parrot.