说好一起二说好一起闹
[shuō hăo yī qĭ èr shuō hăo yī qĭ nào]
This could mean 'said to stay together forever, whether happy or unhappy'. It portrays a wish for constant companionship through thick and thin, implying commitment, friendship or relationship vows between people. There might be a tone of childish innocence here too.