[link to original on tumblr]
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Near the end, Carlin quotes from "Wind Chimes" - "Now and then, a tear rolls off my cheek." It got me thinking about the music that accompanies that part, and I realized that after that line (in both the 1966 and 2004 versions), there's a glissando on (I think) xylophone followed by a staccato note. Presumably, that glissando is the tear running off the cheek, and the staccato note is the tear falling off and hitting an-other surface.
I checked the version of "Wind Chimes" from Smiley Smile, but that glissando and staccato note aren't present there.