我忘了你姓王叫忘不掉我忘了你姓刘叫留不住
[wŏ wàng le nĭ xìng wáng jiào wàng bù diào wŏ wàng le nĭ xìng liú jiào liú bù zhù]
Playful with a hint of humor, the translation is roughly 'I forgot your surname Wang called Forgotten-Not but remember your surname Liu as Retain-Not'. Reflecting memory lapses, possibly about different persons with contrasting impacts memorable and forgettable leaving unique impressions, using surnames as puns.