旺仔怪叔叔
[wàng zĭ guài shū shū]
'Stranger Uncle旺仔'（Uncle Wang Zai is popularized from a milk brand called 旺仔(Wang Zai)，which means 'naughty child' or endearing name）It appears humorous or quirky as if describing a strange uncle figure, maybe hinting at some unconventional personality traits in a playful way.