再二也是你娘们儿再傻也是你爷们儿
[zài èr yĕ shì nĭ niáng men ér zài shă yĕ shì nĭ yé men ér]
This nickname translates to 'No matter how feminine you act or how foolish I look, we will still be what we are.' It's quite informal and suggests acceptance of each other regardless of societal expectations of gender behavior.