A "C-grade movie" refers to a film that is typically low-budget and often characterized by poor production quality, weak acting, and subpar writing. These movies are usually made with limited resources and may lack the polish of higher-budget films, often resulting in a cult following due to their unintentional humor or unique charm. C-grade movies often fall into specific genres, such as horror or science fiction, where creative storytelling can sometimes compensate for technical flaws. They are frequently shown at film festivals or midnight screenings, attracting audiences who appreciate their quirky nature, like those found in the works of Ed Wood or Troma Entertainment.