the Ancient Practice of
Breast Signing, Which Originated Among the Primitive Peoples of Peru
The origin of the ancient practice of breast signing has been lost in the distant mists of time. The first recorded instance of this was discovered in a tomb near Macchu Picchu. The grave site was carbon dated at 3,000 B. C. On a fragment of a wooden bowl was drawn a crude representation of a blues musician, pipes in one hand, pen in the other, writing on the breast of an attractive Indian woman. From this evidence, it appears that even at this early date, breast signing had been around for a long time.
Bari Bradini learned to sign breasts from his grandfather, who had been taught by his grandfather. In fact, it's believed there has been a Bradini signing breasts in Peru for at least 2,000 years, and probably much more.
But perhaps we should defer to the words of the master himself, who talked about breast signing with Truman Capote, who was on a visit to Peru in 1956.