So happy or amused that one cannot close one's mouth; beaming with joy; splitting one's sides with laughter.
看到心爱的礼物，小明高兴得合不拢嘴。
Seeing his beloved gift, Xiao Ming was so happy he couldn't stop smiling.
Era:
Modern
Frequency:
Next Idiom
So happy or amused that one cannot close one's mouth; beaming with joy; splitting one's sides with laughter.
Era:
Modern
Frequency: