The PETER PAN draft says:
Sequence 1.0, Scene 44.1
Father searching for cufflinks -- turning back covers on John's bed.
Michael (o.s.) : "It got lost."
Father : "Good Heavens! My shirt front!"
This is a remarkable scene by John Lounsbery. Mr Darling is looking for his cufflinks, but instead finds his shirt front.
I am sure there was life action reference footage available to Lounsbery, featuring Hans Conried, who voiced the father as well as Captain Hook.
But this goes way beyond live action. The broad motion reflects the father's frustrating emotional state. He can't believe he is finding something he wasn't even looking for.
John Lounsbery was a quiet, soft spoken man. Yet he was able to act out intense, volatile emotions as evident in this scene.
Gorgeous staging and silhouette.