My interviewer seemed king of rude what do you think?

I had an interview today. It didn't really go that well, so when I get the bad news I won't be too disappointed but I wanted to run this buy you guys to see if you agree with me. While in the interview the lady interviewing me was eating ice out of a cup. Which I think is kind of inappropriate, but honestly I don't think I would've minded at all if she hadn't been using her hands to pick up the ice (she also used one of those little mixing straws once or twice)... For most of the interview she was also leaning waaaay back in her chair and for a few minutes she also shifted to sit sideways. WTF, right? Have you ever talked to someone like that? It's very distracting. She also hardly took any notes and it really didn't seem like she had any questions prepared, because she asked me a bunch of oddball questions. I don't know about you guys, but this really threw me off my game and I think played a major role in it not going so well. Why the heck did they have me come in at all if that's the way that it was going to go down? This was rude of the interviewer, right? I know I have to take some of the responsibility for it not going well, but I feel slightly disrespected. Opinions?