idioglossia

Written by William Nicholson and Mark Handley, from Handley's play Idioglossia, it illustrates the familiar movie moral that wounded creatures are powerful ones, with powerful lessons to teach those who would presume to educate them.

At the very least their exchanges were thought to represent the most developed form of idioglossia ever recorded in medical history.

Idioglossia is a phenomenon, badly documented at best, in which two individuals, often twins, develop a unique and private language with highly original vocabulary and syntax.