Miss Clarke was a music teacher at my old school in Central Scotland. Her taste in clothes (black mini skirts, tight black sweaters, knee length boots) and her reputation for seducing 6th years SHOULD have ensured her popularity, but she was highly strung and somewhat given to random bouts of corporal punishment (yes, I AM that old, thank you very much).
Music lessons with her usually consisted of us singing quasi-folk tunes to her piano accompaniment. One classic was “Westering Home”, the first stanza of which song runs as follows:

Westering home with a song in the air,
Light in the eye and it’s goodbye to care.

Naturally, the entire class bellowed out "SHITE!" instead of "light", precipitating the biggest piano-lid-slamming, spittle-flecked screaming session the world has ever witnessed.