According to Wikipedia, KRAV MAGA (meaning “close-contact”) is “a self-defense system developed for the Israel Defense Forces (IDF) that consists of a wide combination of techniques sourced from aikido, judo, boxing and wrestling, along with realistic fight training.” In this video Casey Jost and Yoni Lotan present some instruction on this potentially lethal form of defense. Is it bona fide? Probably not. Is it funny? You betcha! (WARNING: Don’t mess with Krav Maga experts. Mildly NSFW. Do not attempt at home or risk genitalia wounds.)