闺蜜你比小三还棒小四你比闺蜜还棒
[guī mì nĭ bĭ xiăo sān hái bàng xiăo sì nĭ bĭ guī mì hái bàng]
An expression using a provocative and complex interpersonal comparison. Generally considered inappropriate as it uses the terms for the mistress ('third party') and 'fourth party' and might be offensive in context of close friendship.