[link to original on tumblr]
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There's a repeated glissando from a G# to a C#. Or at least there's something of a glissando. The G# slides down, but not all the way to C#. I played the G# on the D string (6th fret) so it can't go all the way to C#. I think it's that way on the recording too. It's like an interrupted glissando. In any case, that part comes after the line "Don't talk; put your head on my shoulder," so it could be interpreted as that movement - placing a head on a shoulder.