An inky webbed-foot print made by the young Louie Trumpeter or
The Ugly Duckling when rubber-stamping his "John Hancock" onto an
important document. Can also loosely refer
to the line of cute little footprints left by a baby swan as he waddles along the shore.
In "Corny Concerto",
The Ugly Duckling encounters two separate "unique codes/representations of oneself" situations --- first, the rough raucous "QUAACCKKK, QUAACCKKK!" sound of his "audible signature" gratingly and
obviously differentiates him from Mama Swan's "truly
biological" trio's melodically-trilling cygnetures, and then the furiously-outraged Mama Swan leaves her own "signature" on The Ugly Duckling's behind when she tempestuously bunts him away off back up the stream.