TL;DR: I somehow knew my grandfather had died before anybody else but my aunt knew, and my great grandmother came visiting me because she wanted great grandchildren but died before my birth

10 years ago, I was with my family on vacation in Tunisia. When we had to go home, our flight was delayed for more than 24 hours, so we were spending the day in the airport.

That's where I was sitting right across from my aunt and my cousin, while my sister and my dad had gone airport shopping.

My aunts phone started ringing and she picked it up, started speaking and almost as soon as she did, I just instantly knew that it was my grandpa (her dad) that had died. I knew before she knew. She started crying and I just sat there in complete shock because, for one it was the first death in my immediate family (from then on it went fast and that really messed with my head to the point where I mapped out my entire family-tree and just crossed names out as they died... tough time for my family) and also because I was just so baffled - how the hell did I know?

That's when my cousin turned to me and said: "You know grandpa died right?" All I could do was nod while choking up on tears. I'm not sure if my cousin had overheard the conversation or if she also just kinda knew.

Before having anybody tell me he was dead I went out to find my dad and sister and tell them the news. I never confirmed with my aunt because I was just 100% certain. In retrospect, I don't actually think that anybody ever told me my grandpa had died, apart from my cousin. I just always knew for some reason.

Bonus story (this may be more of a ghost-story than a glitch-in-the-matrix-story, but then again, who's to say ghosts aren't glitches in the matrix?):

I've always loved having sleepovers at my grandmas house. One of the first times I ever slept there, after having been laying in bed for a couple hours, I went back into the living room: "Grandma, grandma! There's a lady watching me in the bedroom!"

My grandma, of course, became instantly worried and said: "No way! I'll get her out!" to which I replied: "No, you don't have to, grandma. She's not here to hurt me. She just wants to watch."

Of course, no physical beings were in the room but I kept on insisting she was there watching me, until at one point I told my grandma she had left.

My grandma drew the conclusion that it must've been her mother, my great grandma. She lived to hear about my mothers pregnancy with me, but passed a few shortly before I was born. In her last years, all she talked about and all she looked forward to, was getting great grandchildren. My mothers pregnancy had been the highlight of her last days. It would make sense that before crossing over, she'd want to come see me.

One day last year, I was at my grandmas house, and I noticed a picture that I hadn't seen before. "Who's that?" I asked. "I remember seeing her as a kid but I don't think I've seen her for a long time?"

"Oh that? That's your great grandma."

To this day I'm still carrying the little picture in my purse. I like to think that she's somehow watching over me and rooting for me through all my problems. At least, I think it makes sense to think about her a little bit, when she spent so much time thinking about me.