给你脸你就兜着
[jĭ nĭ liăn nĭ jiù dōu zhe]
'Giving you face (respect/face-saving) just invites you to act presumptuously.' When a user grants respect to other individuals expecting polite responses, instead, these people might start treating him/her inappropriately. Thus this sentence expresses disappointment and frustration at those who abuse the goodwill extended towards them.