顏厚有忸怩 [ㄧㄢˊ ㄏㄡˋ ㄧㄡˇ ㄋㄧㄡˇ ㄋㄧˊ; yan2 hou4 you3 niu3 ni2] even the most brazen person will sometimes feel shame (idiom) ◄ ►