Basically, the boss was like a drill sergeant, he didn't seem to understand personal space (talking in my face, etc.), and his expectations were too high for me to meet. He was unreasonable, closed minded, and the job was just too difficult and stressful, and I normally can handle a lot of stress.
None of the things I wrote above would sound good coming out of my mouth at a job interview. How could I phrase this so it's short, simple, and doesn't result in awkward questions, shocked reactions, or the interviewer thinking I can't handle any stressful job?