姉し妹まい丼どんMeaningsNoun1. threesome including two women who are sisters (Vulgar, Slang)Kanji used姉older sister妹younger sister丼rice bowlComposed of姉し妹まいsistersNoun丼どんporcelain bowl; donburi; bowl of meat, fish, etc. served over rice; front pocket in a haragakeNoun