By following the music, the younger (and therefore smaller) pupil would probably find themselves with their head on its side, checking under the side of a rockpool for crabs to catch.  Such a practice would occasionally result in a nip on the nose, but more likely just a wet ear.  This is discussed by Michael Cole in the Seaton Snook Tape Ballad.

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This, along with Pu and Nwod the Senud, Bow to Your Partner and Three Legged Race, is a piece that requires the pianist to engage their whole body with the work, and not just the fingers.