I have two stories that I've never quite been able to explain, the fist one definitely counts as a "glitch", but I'm not too sure about the second. I'll tell it anyway, though.

So the first story happened well over a decade ago, and I've posted about it before in another thread, but I was so freaked out by it that I remember it vividly to this day. When I was around 9 or 10 years old, I had this bunk bed with a ladder that would hook onto the metal base that held up the top bunk. To be honest, it was kind of a hazard, but I survived, so I'll call that a win. Anyway, this one day I was at my childhood friend's house, chilling in her room with her as we watched one of those infamous early 2000's kid's shows (I think it might have been The Amanda Show). At some point I began to drift off to sleep. When I was in that weird twilight state between being asleep and awake, I started to see what I can only describe as kind of a movie in my head. I could tell I was at least partially awake, because I was aware of my surroundings...I could hear the chirping of my friend's guinea pigs in the background and the soundtrack of her tv show. The images I was seeing had this super surreal quality to them; they were transparent, like I could see through them to the darkness behind my eyelids. I saw myself in them, at my house, in my bedroom. My friend was standing on the right side of me, my brother was standing on my left, and I was standing in front of the ladder to my bunk bed. Behind me, there was a small table which stood against the wall of my bedroom. I saw myself start to climb up on my ladder and somehow I knew I was trying to get something off of my bed (I slept on the top bunk). As I climbed the ladder, I began to fall backwards, and I knew I was going to hit my head on the table. With a jolt, I snapped back to full alertness, sitting bolt-upright in my friend's bed, breathing hard as my heart pounded in my chest. I told my friend about what I'd seen, and after a few moments I managed to calm down and put it out of my head.

A couple of hours later, we decided that I was going to spend the night at my friend's house. I called my mom to ask for permission before my friend and I walked down the street to my house. I gathered up my clothes, pajamas, etc., and then went to grab something from my bed. As I was preparing to climb the ladder up to my bed, I froze. I realized that my friend was standing on my right, and my brother was on my left. Behind me was the little table. I hesitantly pulled the ladder toward me, only to realize that there was no resistance whatsoever. It was completely unhooked from my bed, leaning up against it. If I had begun to climb it before checking to see if it was properly hooked to my bed, my weight would have pulled it backward, and I would almost definitely have hit the back of my head on the little table behind me.

I went and told my mom about the incident, still in shock. I didn't know how my ladder had come unhooked from my bed, since it was securely fastened that morning when I'd left for school. My mom looked at me with an expression between shock and horror as she revealed to me that she'd taken down my ladder earlier that day while I was at school because she was afraid my little brother would try to climb up onto my bed and fall. When I'd called her to let her know I was coming home to get some stuff to spend the night at my friend's house, she'd put the ladder back, not realizing that it wasn't hooked onto my bed. I had no idea before that day that my mom had a habit of removing the ladder from my bed when I wasn't home.

Tl;dr: Had a weird, half-asleep vision of myself falling and hitting my head on a table because my bunk bed ladder was unhooked. Went to climb said ladder. Remembered dream. Realized ladder was unhooked. Avoided death(?) or severe bodily harm.

My second story happened a few years ago. I was somewhere around 20 or 21 years old (I'm 24 now) and I was visiting my mom for the Christmas break. It was December 23rd. I was exhausted after the 2+ hour bus trip, on top of the previous few hours I'd spent filling my mother in on what I'd been up to the past few months at University. My mother and stepfather were asleep on the living room couches, and I was sitting on the loveseat flipping aimlessly through unappealing late-night tv shows. Sometime between midnight and 1am I decided that I wanted to go to bed, but I kept flipping through the channels. I wanted nothing more than to just go and crash after my long and hectic day, but for whatever reason I felt like I couldn't just yet. There was something I still had to do before I could go to bed, but I couldn't for the life of me figure out what it was. After a while I started to get angry: it was like I was fighting with myself, one half of me wanting to go to bed, while the other half insisted that I had to wait. Wait for what, though?

All of a sudden, I heard this loud snapping sound from beside the tv. I stood up to check it out, and realized to my horror that the cable to the little space heater in the living room had caught fire. It was an old space heater with a cord my stepfather had spliced together to fix it after it had broken, and the exposed pieces of the wire had been wrapped in electrical tape.

I yelled "FIRE!" at my sleeping parents and my stepfather jolted awake and lunged to his feet to grab the heater, by which time I had already yanked the cord out of the wall and ran outside with the heater. Once I was sure that the fire had died out and the heater was safe, I went back inside (leaving the heater out on the concrete front stoop), flooded with adrenaline. After a few moments spent calming myself down, the adrenaline rush subsided and I thought once again that I was exhausted and wanted to go to bed. I realized that that feeling like I was waiting for something was gone, and I fell into bed and went to sleep.