猥琐大叔亲亲嘴龌龊大娘么么哒
[wĕi suŏ dà shū qīn qīn zuĭ wò chuò dà niáng me me dā]
It's an intentionally exaggerated humorous or derogatory phrase. The literal translation would be 'A creepy uncle kisses and a dirty grandma cuddles', which conveys a humorous but slightly inappropriate theme.