Jokes have been recognized as ways in which negative attitudes and prejudice can be communicated and enacted in hidden ways (e. g., Allport 1954; Freud 2004 [1905]). In this paper, we review the existing literature on the functions and effects of sexist humor, using Martineau's (1972) model on the social functions of humor as well as Tajfel and Turner's (2004 [1986]) Social Identity Theory (SIT) and Turner et al.'s (1987) Self Categorization Theory. Within these frameworks, we particularly focus on sex as an intergroup context and on the way sexist humor functions to a) enhance male in-group cohesion (sexist humor as a predictor) b) serves as a form of sexual harassment (sexist humor as an outcome) and c) amplifies self-reported rape proclivity and victim blame (sexist humor as a moderator). The paper concludes by highlighting gaps in the existing literature and providing directions for future research.