I am trying to improve my vocabulary translating lyrics of songs I like. Today is "Slow Show" by The National. Everything is pretty clear, but for one line:
My leg is sparkles, my leg is pins
My understanding is that his (the singer's, speaking in first person) leg feels "pins and needles", numb. But I am not sure this is the case. For example, I didn't understand why "sparkles" and "pins" are plural while the subject is singular.
In case you need context, you can find the lyrics here.