Bob's playin' the hits today. "Joy to the World", probably my least favorite 3DN song, happy tho' I was to see Hoyt Axton make some serious cash.
It's an overexposed novelty, to be sure, but I'm surprised it's at the bottom of your barrel. I assume you've never heard their "Good Feeling (1959)," the B-side to one of their hits. (Or, for that matter, "Our B-Side," which I think is the only release that gives them a songwriting credit.)
I also think "Play Something Sweet (Brickyard Blues)" and "Sure As I'm Sittin' Here" are FAR worse records, but that's a larger genre-taste issue.