小子你是姐的专属妮子你是哥的唯一
[xiăo zi nĭ shì jiĕ de zhuān shŭ nī zi nĭ shì gē de wéi yī]
In a playful manner, it means 'You, little one, belong only to your older sister; you are the unique possession of your brother', suggesting exclusive bonds or roles within sibling or friend dynamics.