My friends are all, in different ways, very smart people. But they're also kind people. I can like someone who's kind but not intellectual. I don't like someone who's smart but unkind. Bitching is okay.
Anger is okay.
Pettiness in private between friends is okay. Rude, crude, and lewd, I can handle. Might even prefer it. God knows I do all that stuff myself. The one thing I can't stand is a bully.