下毛毛雨

1. • to drizzle to rain lightly
2. • (coll.) to give (sb) a heads-up to break (some bad news) gently to scold mildly

     fig.

Character by character

• 下(xià)down
• 毛(máo)surname Mao
• 毛(mao)surname Mao
• 雨(yǔ)rain