来事儿

來事兒
láishìr
  1. (Mandarin) Erhua form of 來事來事 (láishì).
  2. (colloquial) to know how to deal with people
  3. (colloquial, euphemistic) to be on one's period
  4. Erhua form of 來事來事 (láishì).
  5. to be on one's period
  6. to know how to deal with people

Wiktionary

Entry Composition