Dumb and Dumberer : When Harry Met Lloyd is a 2003 comedy film that is the prequel to 1994 's hit comedy Dumb and Dumber , and stars Eric Christian Olsen , Derek Richardson , Rachel Nichols , Bob Saget , Luis Guzmán , Eugene Levy and Mimi Rogers .
The movie Dumb and Dumberer : When Harry Met Lloyd is also known as Dumb and Dumber : When Harry Met Lloyd and Dumb and Dumber 2 .