Difficult behavior is sometimes associated with a 'brat', and in that vein it can be fun so long as it's inside an agreed upon dynamic.

Most of the time, difficult people try to justify their behavior by saying there's some other, more important, facet to deal with, but the reality is, difficult behavior is just difficult behavior.

Here's some examples I've come across recently:
1) Not answering simple yes/no questions.
2) Having flexible, changing, or vague deal breakers.
3) Making assumptions, treating them as if they're true, and then extending that into insults or por behavior as 'retaliation'.
4) Insistence on arguing about WHO is right instead of WHAT is right.
5) Demanding me to change my stance or process so they can achieve what they want NOW, instead of later in the process.

I already have plenty of work, and I have no desire to have another part-time job. I'm here to play, have fun, release, and enjoy. I have ZERO interest in anything that interrupts what I'm here for, and I'm happy to walk away from those behaviors to preserve my peace, and to save my time for someone of value, someone I can respect, enjoy, and have mutually beneficial time with.