马尾穿豆腐，提不起来

馬尾穿豆腐，提不起來
mǎwěichuāndòufu,tíbuqǐlai
  1. lit. like tofu strung on horsetail, you can't lift it
  2. fig. let's not talk of this (pun on 提 tí)

CEDICT

Entry Composition

1 马尾 mǎwěi
  1. ponytail (hairstyle)
  2. horse's tail
  3. slender fibers like horse's tail (applies to various plants)
2 穿 chuān
  1. to wear
  2. to put on
  3. to dress
  4. to bore through
  5. to pierce
  6. to perforate
  7. to penetrate
  8. to pass through
  9. to thread
3 豆腐 dòufu
  1. tofu
  2. bean curd
4 提 tí
  1. to carry (hanging down from the hand)
  2. to lift
  3. to put forward
  4. to mention
  5. to raise (an issue)
  6. upwards character stroke
  7. lifting brush stroke (in painting)
  8. scoop for measuring liquid
5 不起 bùqǐ
  1. (literary) to be unable to get up (e.g. to sickness)
  2. (used after verbs) cannot afford to ...
  3. (used after verbs) do not wish to ... (in contempt)
  4. cannot afford to ...
  5. do not wish to ... (in contempt)
  6. to be unable to get up (e.g. to sickness)
6 来 lái
  1. to come
  2. (used as a substitute for a more specific verb)
  3. hither (directional complement for motion toward the speaker, as in 回来 huílai)
  4. ever since (as in 自古以来 zìgǔyǐlái)
  5. for the past (amount of time)
  6. (prefix) the coming ...; the next ... (as in 来世 láishì)
  7. (between two verbs) in order to
  8. (after a round number) approximately
  9. (used after 得 dé to indicate possibility, as in 谈得来 tándelái, or after 不 bù to indicate impossibility, as in 吃不来 chībulái)