洋娃娃和小熊饼干
[yáng wá wá hé xiăo xióng bĭng gān]
This nickname combines two charming, playful elements – 'foreign doll' which often represents pretty, Western-style toys and 'teddy bear-shaped cookies.' Likely used by someone wishing to come across as cute, sweet, and childishly innocent. Or possibly referencing to the well-known song with a similar title in childhood, invoking innocence and nostalgia.