Do you mean as in the clinical form of Disassociative Identity Disorder or a seeming split in behavioral traits but person is oriented to name, time, place, date, etc? Curious me.

Ex-friend thought I was his sister and then went on to tell ME about how cool this guy he met in a wheelchair was. And that it's ok as a 60 year old for him to let exotic dancer light a hula hoop as a guest in a home with kids asleep. She was a pro so it was surely safe.😯 Um no.