when I was a TA a while back I had a student who was obviously, excuse the term, crazy. She would show up late all the time having not slept for days - which sometimes resulted in her forgetting what day it was altogether) sometimes forget to wear shoes, dressed very provocatively but didn't wash or comb her hair (often appeared to be wearing days old makeup), insisted on sitting on the floor and would snap at people for making the tiniest noises (even breathing), was very inappropriate and intrusive. For her final paper, she turned in a rambling 40 pages in which she had a conversation with herself. I wasn't aware of her diagnosis but figured it was a pretty severe case of bipolar 1.

This is what I think of as BP w/psychosis (of course I know there is a vast spectrum/range) - but even so, in comparison it's really hard for me to think of myself as someone with 'psychotic' features of any kind...let alone even bipolar (!)