The contect is...
If I hand you a baby to hold, what happens to you? Your voice changes, your face changes, and your vocab changes right before my eyes in a way that's almost too weird to witness. Your face turns to rubber and you start cooing and talking in a tiny voice. Have you ever changed!
what does "your face turns to rubber" mean? surprised? astronishing? or soft?
can "too weird to witness" mean "never seen before"?
(i) The muscles in your face turn to rubber. They are no longer stiff or controlled.
(ii) To weird to witness means, embarrassing to watch.
Hope that helps.