没脑子少女不高兴大叔
[méi năo zi shăo nǚ bù gāo xīng dà shū]
'没脑子少女不高兴大叔' literally refers to 'a silly girl upsetting the uncle.' This might indicate a young woman's mischievous actions lead an older man getting irritated, but also may imply a light-hearted, playful relationship dynamic with affection behind it.