I agree with Asdfaeou's assessment.
It's also worth noting that Andrew Bird is playing off the old children's rhyme:
Rubin, Rubin, I've been thinkin' What on earth have you been drinkin' Looks like water, tastes like wine Oh my gosh, it's turpentine
(Different variations of the rhyme exist, of course)
I agree with Asdfaeou's assessment.
It's also worth noting that Andrew Bird is playing off the old children's rhyme:
Rubin, Rubin, I've been thinkin' What on earth have you been drinkin' Looks like water, tastes like wine Oh my gosh, it's turpentine
(Different variations of the rhyme exist, of course)