a.i.f., adj. — Green’s Dictionary of Slang

a.i.f. adj.

[rhy. sl.; A.I.F., the Australian Imperial Forces]

deaf.

1971		J. McNeill Chocolate Frog (1973) 21: [Y]ou must be a bit AIF, like, ’cos you just wasn’t participatin’ with us [ibid.] 23: Shirker: (peevishly) You AIF or somethin’?
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 17: A.I.F. Deaf.
2002		Pete’s Aussie Sl. Home Page 🌐 A.I.F.: deaf.