I only read the OP so forgive me if I'm missing anything in my post.
I have passed out randomly a few times in my life, sometimes explainable.
Age 13 I'm walking my dog and leave my apt building. Last thing I remember is walking out to the sidewalk. Then one of the people who lived in my building found me laying outside and carried me back to my home, told my folks that our dog was still outside.
I got taking in for some tests, they put some wires on me and said I was OK.
I randomly passed out when I was in my early 20's. Chillin with my people and just fell down. Went to the hospital and they just let me go.
Happened again 8 years ago, I was chilling on the couch but this was different. I felt it coming on. It was like a midget was on my back choking me out. I knew it was only a matter of time before I fell out but didn't understand what was happening so I went to the toilet to see if pooping would help.
I woke up with a knot on my head and my pants around my ankles. Got a heart monitor for a couple of week and it all turned out ok.
Sometimes we just turn off...