Simon Rex Cutright (born July 20, 1974), also known as Dirt Nasty, is an American actor, rapper, comedian, and model. Rising to fame as an MTV VJ, Rex later became an actor known for What I Like About You, starring in three films of the Scary Movie franchise, and National Lampoon's Pledge This!. He later developed a rap persona, Dirt Nasty, and had several solo albums and co-founded the supergroup Three Loco.
In 1993, aged 19, Rex began his career, responding to a modeling advertisement in a Los Angeles magazine and agreed to be photographed nude for photographer Brad Posey and his Club 1821 studio. The following year, under the alias Sebastian, he appeared in solo masturbation scenes for three Club 1821 pornographic films: Young, Hard & Solo #2, Young, Hard & Solo #3, and Hot Sessions III. Archive footage was used in the 2000 films Hot Sessions 11 and Hot Sessions 12. In 1994 Rex, went on a modeling tour for Tommy Hilfiger, before going on to appear in mainstream modeling gigs for Calvin Klein, Versace, and Levi’s.