Dykes to Watch Out For (sometimes DTWOF) was a weekly comic strip by Alison Bechdel. The strip, which ran from 1983 to 2008, was one of the earliest ongoing representations of lesbians in popular culture and has been called "as important to new generations of lesbians as landmark novels like Rita Mae Brown's Rubyfruit Jungle (1973) and Lisa Alther's Kinflicks (1976) were to an earlier one". It introduced the Bechdel test, a set of criteria for determining gender bias in works of entertainment, that has since found broad application. Source: Wikipedia (en)