Frannie and I enjoyed this cute puzzle as we solved it, cutely, side-by-side. Sorry for the grossness, I couldn't resist. But really, doesn't everyone enjoy pig Latin - AMSCRAY (40A: Go away as a speaker of pig Latin might?)? And the classic MAKELIKEA/BANANA/ANDSPLIT (58A: With 63- and 65-Across, go away as a soda jerk might?) always delivers. And BEATIT (18A: Go away as a Michael Jackson impersonator might?)? Also cute.
We got caught up briefly by trying "reb" instead of JAY (20A: Yank rival), but ABBA (9D: Group featured in "Mamma Mia!") quickly righted that. The regular Latin really paid off today, too, as I entered BEWARE (15A: The "cave" of "cave canem") ("Beware of dog") immediately. That might be the same in regular Italian, too, come to think of it, but I'm not sure.
I don't particularly love KGS (25D: British scale divs.) (isn't kg enough?), and I don't often think of Orel Roberts University (2D: Tulsa sch. with a Prayer Tower (ORU)). And XOX (34D: Worthless tic-tac-toe row) is a bit random. At least they didn't clue it with "Losing line," which has stumped me for much longer in the past. But really, most of those things were filled in before we even read the clues. This was a Tuesday-level puzzle, maybe, but it was a good one. And hey, I can't forget to mention DARCY (27D: "Pride and Prejudice" protagonist)! That automatically shoots the puzzle up in Frannie's estimation, at least. (And mine, really. It's a great book.)