色字頭上一把刀

色字头上一把刀
sèzìtóushàngyībǎdāo
  1. lit. there is a knife above the character for lust
  2. fig. lascivious activities can lead to bitter consequences

CEDICT

charming beauty makes men fall

Wiktionary

以色字的刀字頭比喻好色的下場是極慘痛的。

重編國語辭典

Entry Composition

1 色 sè
  1. color
  2. look
  3. appearance
  4. sex

classifier: 種
2 字頭 zìtóu
  1. single-character headword (in a dictionary)
  2. first character of a Chinese word
  3. the top part (esp. a radical) of a Chinese character
  4. the initial of a Chinese syllable
3 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
4 一把 yībǎ a bunch of; a bundle of
5 刀 dāo
  1. (slang) (loanword) dollar
  2. classifier for sets of one hundred sheets (of paper)
  3. classifier for knife cuts or stabs
  4. (Internet slang) to bargain; to ask for a small discount (esp. on second-hand marketplaces)

classifier: 把