So? That is a common figure of speech, used most often by someone who is
not in a psychotic state.
My brother was a schizophrenic---he went in and out of psychosis. When he was on his meds he was usually sane and measured. When triggered he would sometimes have psychotic episodes.
When he was in his right mind he was very intelligent and truthful. If he could sit and have a coherent conversation, answer questions logically, then he was in his right mind. He was reliable and logical in that state of mind.
When he was hearing voices and acting delusional it was very obvious. He could not have a linear, logical conversation with proper responses to questions.
I do have his convo with KA handy and it convinces me he was in his right mind and sane at that time. Saying 'I think I'm losing my mind' shows me he knows the difference between those two states of consciousness. He knows he goes in and out of sanity. It's a scary thing. My brother spoke the same way. He knew he was often on the edge of sanlty. It's tragic.
When my brother was in a psychotic state he was convinced the CIA was after him. He had his windows blacked out with black butter paper and he put tin foil around his radio and TV antenna---not sure why exactly. But he was convinced Johnny Carson was speaking to him in code about some secret CIA operation. He even went to the Tonight Show one afternoon---drove from SF Bay Area to Burbank---to sit in the audience and he actually ran towards the stage during commercial break and was arrested----for real.
But in between those crazy episodes, he was sane and wonderful and very funny and sweet. When he was not being psychotic, he knew he was not in the CIA. He even laughed, kind of embarrassed about some of his antics. He remembered little of it but knew he was acting crazy during those 'fits' as he called them.
Sadly, when he was off his meds he could be volatile and dangerous. He was mad at my stepdad one time, and when my parents got home, they found Papa's stuffed living room chair in the backyard, full of holes made by an ice pick, which was broken on the lawn.