I predict that before the night is out, Carrow will be along to snarl something threatening at you for daring to wish anyone at all a Happy Anything.

He follows you around the journals like some sort of hungry animal looking for dinner. I wish he'd fall in the lake and get eaten by the Giant Squid. Or wander too close to the Dementors and get eaten by one of them, though they'd probably throw up what passes for his soul, it's too nasty even for a Dementor.