Green’s Dictionary of Slang

Africa speaks n.

[? ref. to early S.Afr. documentary film (on the then ‘Belgian’ Congo) Africa Speaks (1930)]

(Aus./N.Z.) strong liquor imported from South Africa.

[Aus]Baker Aus. Lang. 165: Here is a group of indigenous terms used to decribe cheap wines: Africa speaks, bombo, Clever Mary [...].
[Aus]Baker Drum.
[Aus](con. 1928) Saltbush Bill & S. Gore Holy Smoke 79: A drop of Africa speaks from the vineyards.