Brains are part of the body, right? I have Prosopagnosia (face blindness), which means that I do not recognise or remember faces. I can look at someone, turn around, turn back, and I won't recognise their face. I don't recognise my coworkers, friends, or family by face. I have a lot of funny stories related to this...
This blew up!
I have (twice) met a coworker while I'm not at work, had them greet me, and had to BS my way through an entire conversation because I had no idea who they were. Same person. Twice.
Somewhat sad but really interesting story: My partner was hospitalised about a year ago. His mother lives about about a 3 hour flight away, and she couldn't come see him immediately. When she came in, I was still driving over, because I'd gone to work that morning to pick some stuff up, and when I walked in, I didn't recognise her. She has beautiful hair, a very interesting colour. I didn't realise she dyed it, and it had grown in grey between when she heard and when she came. I asked if she was a nurse. Fortunately, she's wonderful and totally understood.
Presentations are the bane of my existence.
I had a friend in University who could do uncanny imitations of our professors. She also had some kickass tattoos, which were great for identifying her. She knew I was faceblind, but not quite how face blind until she came up to me imitating a professor we shared. Not only did I fall for it, she walked right up to me, 'assigned' some reading I'd missed, and walked off (small department, final year. This wasn't altogether unusual). The only reason I was remotely suspicious was that the professor wasn't a talking to students type. She was wearing a jacket that covered her tattoos, and I had no idea who she was.