难剃的头

Traditional (Taiwan): 難剃的頭

nántìdetóu ㄋㄢˊ ㄊㄧˋ ˙ㄉㄜ ㄊㄡˊ

    • person or matter that is hard to deal with
    • tough customer

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
a head that is hard to shave
Meaning
A person or matter that is hard to deal with. Similar to 'a tough customer'.

Sources