slaphappy
1. Happiness can't talk, others will think you slaphappy; Sad can't talk, except will not have other newer adjectives to restrain one's relief.
快乐不能讲,人家会觉得你得意忘形;悲伤不能讲,除了节哀不会有其他更新的形容词。
2. knocked silly by the impact; slaphappy with exhaustion.
被这一撞撞得头昏眼花;筋疲力尽、头昏眼花。