He excites me: must be like the Genesis of Rhythm

from Fiona Apple – Hot Knife Lyrics on Rap Genius


She might be referring to a book, Genesis of Rhythm which is about “patterns of spiking activity observed during normal brain functioning”.

Similarly this man gets her sparking, as she says in the next line (makes her feisty).

Given that the song has a very primal drumbeat in the background, she even may be referring to the literal genesis (beginning) of rhythm as a concept as well, and how exciting it must have been to those who discovered it.

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