I'm not much for American comedies, and while the first Bad Moms was a cut above the usual sort of thing on offering from that sector, I didn't love it, and A Bad Moms Christmas is little more than a seasonal themed, watered down version of the first one, complete with the half-baked version of the main characters relearning their "lessons" from the original. I've suffered far worse than A Bad Moms Christmas, to be sure, but I think it would be better if they had just left it at one movie.
Final rating:★★ - Had some things that appeal to me, but a poor finished product.