Af, n. — Green’s Dictionary of Slang

Af n.

also Aff

[abbr.]

(S.Afr.) a derog. term for an African.

1974		Bulletin (Sydney) 14 Sept. 37/3: According to the pragmatic Vorster, Smith should have a stab at placating his ‘Afs’.
1976		J.F. Burns in N.Y. Times 22 June 13: A common feature of the conversation with the whites was the use of pejoratives to refer to blacks ... In English-speaking households, the words ‘natives’ , or ‘Afs’ were common.
1986		P. Slabolepszy ‘Boo to the Moon’ in Mooi Street (1994) 120: Hey girls – you’d better get used to taking rides from the Affs, hey.
1989		J. Hobbs Thoughts in a Makeshift Mortuary 158: Af. Lit., sies!
1990		R. Malan My Traitor’s Heart (1991) 41: In my teens, everyone knew that all ‘Afs’ smoked dope.

In compounds

aftax (n.) [SE taxi]

a black-owned taxi (usu. an old, American-made car).

1983

T. McAllen Kyk Daar n.p.: In order to qualify for the label Aftax the vehicle has to be of original American manufacture and at least twenty years old ... To own an Aftax carries status and wealth. To drive it requires courage and fortitude, second to none [DSAE].