插一腿

chāyītuǐ ㄔㄚ ㄧ ㄊㄨㄟˇ

    • to butt in on something midway
    • to meddle

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
stick in a leg
Meaning
A variant of 插一杠子: to butt in on something midway.

Sources