骚年分不清洞与菊
[sāo nián fēn bù qīng dòng yŭ jú]
'骚年' (sāo nián) is a play on words that combines the character for 'unstable/youthful energy' (騒 sāo) with the word for 'year' (年nián). This refers to youth's confusion and mischievousness between two different things, which can have risque undertones when referencing 'cave and chrysanthemum'. It conveys a naughty young person's mixed-up state of affairs, usually humorously.