Whole lotta uppers

Oh, but it's for the homeless...

I can't decide if this rapid-fire, intelligible, polka-like holiday ditty is proof that Bob Dylan is clean or just using better quality junk. I mean, when has he ever sung so fast? And don't say "Subterranean Homesick Blues" because this is way faster. Unless you're referring to the version by Red Hot Chili Peppers.