Karen "Duff" Duffy, who played a hitman in the film, reveals secrets from the set Shutterstock If you grew up in the '90s, then you probably grew up quoting Dumb and Dumber, the 1994 comedy ...

Liz McNeil is an Editor at Large at PEOPLE, where she's worked for over 30 years. Karen "Duff" Duffy is reflective on the end of MTV News, which she once called home. MTV's parent company ...

Karen "Duff" Duffy, who played a hitman in the film, reveals secrets from the set If you grew up in the '90s, then you probably grew up quoting Dumb and Dumber, the 1994 comedy starring Jim Carrey ...