>>2046203>Nandayo " (何だよ) Means basically: "What the hell!", The kanji: 何 - nan, means "what". Japanese people have "dayo" (-だよ) ending particles, that basically express that you are disturbed / irritated / angry.>>2046243>Umai can either be an informal oishii or can be used to indicate being good at somethingThank you lunaitos. I even learned about the dayo particle.