忘乎所以 forget oneself; become delirious with joy; forget everything in one's joy; get a swelled head; (they) grow so swellheaded and conceited that (they) simply forget themselves.; have one's head in the clouds; lose all bearings in moment of pride and satisfaction; make sb. swellheaded; one's head has been turned (by ...); turn one's head 心血來潮, 忘乎所以 be carried away by a sudden impulse; lose one's head in a moment of excitement; 在勝利面前不要忘乎所以。 one mustn't be carried away by one's successes
愚者忘乎所以 he is a fool that forgets himself; he is a good friend that speaks well of us behind our backs