萬能膠

Simplified: 万能胶

wànnéngjiāo ㄨㄢˋ ㄋㄥˊ ㄐㄧㄠ

    • strong universal adhesive
    • a clingy person who won't leave one alone

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
all-purpose glue
Meaning
A strong universal adhesive; figuratively, a clingy person who won't leave you alone. Humorous.

Sources