they'll be spittin' in your eye: oh yeah, lookin' good
they'll be spittin' in your eye: he ain't smart, but at least he's pretty
they'll be spittin' in your eye: he's got one eye on you (and it's his good one)
they'll be spittin' in your eye: it's your birthday (and you can cry if you want to)
they'll be spittin' in your eye: hey there, honey, don't be sad