西瓜头冬菇头
[xī guā tóu dōng gū tóu]
In Chinese slang, this phrase humorously compares two hairstyles—'watermelon head' (referring to a spiky hairstyle) and 'mushroom head' (indicating a flat top). It is used playfully to comment on peculiar but distinctive fashion styles, possibly showing an affinity towards unconventional appearances.