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Hui (Хуй) is a derogatory name of male reproductive organ in Russian. It's an incredibly common word in Russian-speaking countries and has quite a lot of (deragotory) meanings and can be used to describe numerous actions. Common phrases: "Пошел на хуй", "Идите пожалуйста нахуй"(approx. "fuck you"), "Дохуя" ("shitload"), "Похую" ("fuck it", as in "don't care"), "Хуёво" ("fucking bad"), "Охуенно" ("fucking good"), "Нихуя себе" ("fuck me", extreme surprise), "Нахуя?" ("for fucking what?"), "Прихуеть" (be surprised), "Хуячить" or "Хуярить" (do something), "Расхуярить" (destroy), "Похуярить" (to go somewhere), "Хуйнуть" (hit somebody), "Охуеть" (to be surprised or to become impudent), "Хуйня" ("bullshit"), "Хуевинка" or "Хуйнюшка" (small, tiny thing).