I thought Borat 2 was OK. Watched it when my wife was out of town too. Made me laugh at parts.
But it reminded me of how funny Da Ali G show was, so after it was over I started watching old episodes on YouTube. 100x better and funnier. He’s much better as an interviewer, and it’s funnier when no one knew who Sacha Baron Cohen was. I kept watching episodes once my wife got back, and she thinks they’re hilarious too.
Now my recommendation is don’t even bother with the movies. Just watch his old show.