穴兄弟

xuéxiōngdì
  1. (vulgar, chiefly derogatory) multiple males sharing one female sexual partner
  2. multiple males sharing one female sexual partner

Wiktionary

Entry Composition

1 穴 xué
  1. cave
  2. cavity
  3. hole
  4. acupuncture point
  5. Taiwan pr. xuè
=2 兄弟 xiōngdì
  1. brothers
  2. younger brother
  3. I, me (humble term used by men in public speech)
  4. brotherly
  5. fraternal

classifier: 個
=2 兄弟 xiongdī
  1. (colloquial) my brother; bro (A term of address for a close friend of similar age or younger)
  2. A humble term of self-address used by a man to people of the same generation.
  3. my brother; bro (A term of address for a close friend of similar age or younger)