Green’s Dictionary of Slang

a.m.f. phr.

[abbr. adios motherfucker; euph. as adios, my friend]

a euph. abbr., goodbye, that’s it, it’s all over.

[US]P. Tamony collection.
H.P. Dunne Mooncusser 83: ‘AMF, baby,’ he said, and hung up. Adios Motherfucker to you, too, I said to myself.
[US]Michael Seaver ‘Could You Work in the ER?’ 🌐 You mutter ‘AMF’ (adios my friend) to an obnoxious patient leaving. You associate possible paint colors with body secretions or functions.
A. Zullo Golf is a Funny Game 10: ‘Pardon me, Judge [...] but just what does “AMF” mean?’ The prim and proper jurist turned to Cohen and replied simply, ‘Adios, motherfucker’.
[Aus]D. Whish-Wilson Shore Leave 25: Alpha Mike Foxtrot. Adios, motherfuckers.