嘿妞给爷笑一个喂爷妞对着你笑
[hēi niū jĭ yé xiào yī gè wèi yé niū duì zhe nĭ xiào]
Roughly translates as 'Hey girl, smile for me; hey boy/girl, laugh at you.' This is a playful call-and-response phrase between friends or lovers. The informality suggests closeness.