拾蝦米

Simplified: 拾虾米

shíxiāmǐ ㄕˊ ㄒㄧㄚ ㄇㄧˇ

    • to pick up leftovers that others did not want
    • to make do with scraps

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
picking up small shrimp
Meaning
Means picking up the leftovers or scraps that others did not want. Mildly belittling.

Sources