LARRIKIN
Etymology
Noun
larrikin (plural larrikins)
(Australia, New Zealand, slang, dated) A brash and impertinent, possibly violent, troublemaker, especially a youth; a hooligan.
(Australia, slang) A high-spirited person who playfully rebels against authority and conventional norms.
Adjective
larrikin (comparative more larrikin, superlative most larrikin)
(Australian, slang) Exhibiting the characteristics or behaviour of a larrikin; playfully rebellious against and contemptuous of authority and convention.
Source: Wiktionary
Lar"ri*kin, n. [Cf. E. dial. larrikin a mischievous or frolicsome
youth, larrick lively, careless, larack to trolic, to romp.]
Definition: A rowdy street loafer; a rowdyish or noisy ill-bred fellow; --
variously applied, as to a street blackguard, a street Arab, a youth
given to horse-play, etc. [Australia & Eng.] -- a.
Definition: Rowdy; rough; disorderly. [Australia & Eng.]
Mobs of unruly larrikins.
Sydney Daily Telegraph.
Larrikin is often popularly explained by the following anecdote
(which is without foundation): An Irish policeman at Melbourne, on
bringing a notorious rough into court, was asked by the magistrate
what the prisoner had been doing, and replied, "He was a-larrikin'
[i. e., a-larking] about the streets."
Source: Webster’s Unabridged Dictionary 1913 Edition