Learn how to say Larrikinism correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word larrikin:
a boisterous, often badly behaved young man:
James was something of a larrikin
Australian a person with apparent disregard for convention; a maverick:
the larrikin trade union leader
mid 19th century: from English dialect, perhaps from the given name Larry (pet form of Lawrence) + -kin, or from a pronunciation of larking