[-]

Jyutping lat1 sing2 maa1 lau1
Pinyin shuǎi shéng mǎ liú

Definitions (粵典–words.hk)
  1. 名詞
    百厭​到​大人​管​唔​住​嘅​細​路​仔​(​量​詞​:​隻​)
    a very naughty child that is no longer under the control of their superior or guardian; literally, loose string monkey
    • 班細路好似甩繩馬騮噉,喺班房度走嚟走去。
      班细路好似甩绳马骝噉,喺班房度走嚟走去。
      baan1 sai3 lou6 hou2 ci5 lat1 sing2 maa5 lau1 gam2, hai2 baan1 fong1 dou6 zau2 lai4 zau2 heoi3.
      The kids are running in the classroom like a bunch of loose string monkeys.

[-]

Jyutping lat1 sing2 maa5 lau1
Pinyin shuǎi shéng mǎ liú

Definitions (CC-CANTO)
  1. describes a person (usually a child) who has regained freedom after being restrained and is now acting up; literally 'a monkey whose rope has been untangled '; someone who is unruly or out of control
Definitions (粵典–words.hk)
  1. 名詞
    百厭​到​大人​管​唔​住​嘅​細​路​仔​(​量​詞​:​隻​)
    a very naughty child that is no longer under the control of their superior or guardian; literally, loose string monkey
    • 班細路好似甩繩馬騮噉,喺班房度走嚟走去。
      班细路好似甩绳马骝噉,喺班房度走嚟走去。
      baan1 sai3 lou6 hou2 ci5 lat1 sing2 maa5 lau1 gam2, hai2 baan1 fong1 dou6 zau2 lai4 zau2 heoi3.
      The kids are running in the classroom like a bunch of loose string monkeys.
Definitions (Wiktionary)
  1. noun, Cantonese, figuratively
    very naughty child that has gone out of control
Examples (粵典–words.hk)
  1. Cantonese
    甩绳马骝
    甩繩馬騮
    lat1 sing2 maa5 lau1
    • a very naughty child out of control; literally: a loose string monkey
  2. Cantonese
    班细路好似甩绳马骝噉,喺班房度走嚟走去。
    班細路好似甩繩馬騮噉,喺班房度走嚟走去。
    baan1 sai3 lou6 hou2 ci5 lat1 sing2 maa5 lau1 gam2, hai2 baan1 fong1 dou6 zau2 lai4 zau2 heoi3.
    • The kids are running in the classroom like a bunch of loose string monkeys.