Green’s Dictionary of Slang

offer someone out v.

(Aus.) to challenge to a fight.

[Aus]Port Augusta Dispatch (SA) 9 Oct. 2/5: When off duty I have ‘offered him out,’ but he would not put up his hands, only kicked at me.
[Aus]Burra Record (SA) 17 Aug. 2/5: Accused used most disgusting language, and ‘offered him out,’ taking off his coat to prepare for action.
[Aus]Bathurst Free Press (NSW) 6 Mar. 2/4: The defendant called him a ‘liar’ and offered him out in the back yard.
[Aus]Critic (Hobart, Tas.) 24 Sept. 2/6: To the unbounded astonishment of the Ministerial secretary I didn’t swear, or offer him out to fight [...] On the contrary, I smiled a huge smile.
[Aus]Truth (Sydney) 24 Apr. 10/7: Then Johnson said if they were looking for It, they could have a ‘go’ and offered them out to have a fight.
[UK]Observer (Adelaide) 19 Jan. 5/3: The boys saw the boxing kangaroo at work. One [...] received a severe fright when the long-tailed gentleman ‘offered him out,’ and a member of the staff received a memento in the nature of a deep, scratch.
[Aus]Northern Standard (Darwin) 25 Jan. 10/4: It was stated defendant walked up to Allwright and struck him over the eye [...] Shadforth, in his defence, said he had had a few drinks and was not responsible for his actions. He had been under the impression Allwright had offered him out.
[Aus]Glen Innes Examiner (NSW) 24 Feb. 4/7: Defendant refused [to leave], and when witness offered him another chance to go home, defendent ‘offered him out’.
[Aus]Wingham Chron. (NSW) 11 May 4/3: ‘A fellow called me a — , and I offered him out’.
[UK]Guardian CiF 2 Jan. [Internet] I was standing in line at a Mickey D's [...] and the three very drunk guys in front of me offered me out.