In today's theme answers, the letters INK at the end of three phrases letterally fall off one by one. They all show up at the start in the nice full-grid-spanning ICANTSLEEPAWINK before the K tumbles off into the KITCHENSIN (Leaving dirty dishes on the counter, say), then NK goes underground giving us HOTPI (Sexy detective), and then the removal of INK MAKESYOUTH (Works like an anti-aging serum). The revealer, DISAPPEARINGINK, is another nice full-grid-spanning answer. Fun.
I thought it was good, in a way, that another brand of root beer, Mug, could also fit at 21A (Root beer brand) where IBC was wanted. I say 'in a way' because some solvers might have entered Mug first before realizing their mistake. Some solvers might also have had a similar experience with "honk" and BEEP (Rush-hour sound) at 44D. :|
I enjoyed the clue at 49D: Bends at a barre (PLIES). And, I thought 11-12D: "With 12-Down, actress Joan whose last name consists of two different conveyances" (VAN ARK) was rail good.
I thought all of today's QMCs were entertaining. These are three of my favorites:
31D: Grounds for discussion? (FORUM) - location, location, location!
56D: Letters at a filling station? (DDS) - a gas!
31A: Part of a Swiss roll? (FRANC) - dough!
There's not much to like about OVATE, TSOS, or PDT but sometimes, the show must go on.