This talk synthesizes a work in Experimental Philosophy in which gender differences in humor are investigated. We asked men and women to send jokes, and men sent more jokes that contained some element of violence, as well as more sexist, homophobic and discriminatory jokes. The themes of the jokes they chose were not much different than the themes that the stereotype indicates are more attractive outside the realm of humor: in the case of men, sex, money, politics and war; in the case of women, interpersonal relationships and, in terms of comedy resources, more puns. On average, men responded more frequently with another joke when they perceived a situation as humorous, which is consistent with previous studies (Provine, 1993) and with hypotheses corroborated by empirical studies of evolutionary psychology. This study might help to find out why some jokes told by men turn out to be violent for women, it might also help to focus on the relationship between ethics and humor, and to identify patterns that could encourage women to have -on average- a more active role in the production of humor. Roxana Kreimer´s talk took place in the the 28th ISHS Conference (the biggest humor conference in the world, organized by the International Society for Humor Studies), held at the Trinity College of Dublin, Ireland, from June 27 to July 1, 2015. Including the debate, it lasts 25 minutes.