stands for Big Austrian Cock.
Austrian men are famously considered to be quite well-endowed individuals hence the abbreviation for their genitalia became known as BAC. Women from all over the
world crave BAC but especially Slavic ones.
BAC is widely known in the Slavic regions of Europe because their long intertwined
history with Austria. Austria has long been a melting pot of Austrians and Slavic peoples and over the course of
history there have been many interracial relationships between both peoples.
Since the opening up of the Soviet Union, lots of Austrian men who cannot find a partner at
home travel to eastern/southeastern Europe in order to find a woman to marry. This practice has become so prevalent in Austria that there is even a TV show about it (Das Geschäft
mit der Liebe).
Lots of Slavic women from southeastern Europe move to Austria both for the
better BAC and the better living standards.