What the heck is this ??? The native africans are known for their bizarre practices and this is one of them...
The mothers do it and the reasons are girls with breasts attract guys and they indulge in sex and bring home unwanted kids ... to prevent so ... they iron the pubescent girls breasts with hot stones...giving her a lifelong pain of all sorts... this is the reason their mothers' had ... it passes on generation after generation...
Now I can understand why Africa is a dark continent...