When I was about 13 or so, there was this phase that me and my friend group went through where we all started making free websites on Webs.com and turned them into these weird little hangouts that only ever had like 10 members max (and usually only 3-4 active ones). One of these websites was created by a girl that I didn't even personally know very well prior to when her website was made, and I really only knew her as my brother's ex-girlfriend at the time, although we got to know each other a bit better after hanging out online for a while. She went by some variant of Black Rose online, so I'll just call her that. Anyway, Black Rose's site was frequented by me, Rose, and one of Rose's friends -- someone that I didn't know at all. I think her username was 'Autumn'-something.
So we all hung out on this site for a while -- just using it to talk about whatever and do randumb shit like me and my friends did on all these other Webs sites. Then, all of a sudden, Rose contacted me off-site, and started telling me about how she hadn't actually hung out with Autumn IRL in quite a while (years, I believe), and that they'd only been keeping touch really casually through email and Webs. And... what comes next is going to sound like a really lame creepypasta, but, stay with me, because it gets weirder. Rose said that when she tried to contact Autumn outside of these methods, she was only able to get in contact with Autumn's parents, who told her that Autumn died in some freak accident quite some time ago. So then it turned into a "if the real Autumn's dead, who have I been talking to online all this time??" sort of thing.
Like I said, this sounds pretty lame on the surface. And, looking back on it, it would be easy to say that Rose was just making all this up and that she and Autumn were just pulling some dark prank on me. But, 13-year-old me was not only very gullible, but also had a very active imagination, and I think part of me even sort of wanted to believe that something supernatural was happening.
In any case, there's more.
I don't remember how or why, but I eventually started emailing Autumn herself. The emails that I received were all in Latin, though. I tried to use Google Translate, but, unsurprisingly, it mangled up all the sentences and made it difficult to really make sense of anything. Anyway, I eventually convinced 'Autumn' to start speaking English, and I asked her why she was sending me weird stuff in Latin (as well as where and how she even learned Latin). She said it was just something that she and "the others" did because they were bored, and that you "have a lot of time to learn a new language when you're dead" or something like that.
And then, I don't remember how the conversation got to this point, but... she started listing off all sorts of information about me. She knew my real name, my address, my brother's name, my mom's name, where my mom works, and, most creepily of all, she knew stuff about my dad -- who had died a few years ago at this point -- and she claimed that she had met my dad in the afterlife and that she learned all of this from him in the first place. Autumn also said something about how her own death happened because of some 'curse' and that, now that we've interacted with her, Rose and I would be next to be killed by that same curse... It was all really freaky, especially given all that stuff she said about my dad and the rest of my family. That's what really caught me off-guard. O_O
Like I said, Rose was my brother's ex-girlfriend, so the most likely explanation is that all of this was some dark prank done by her and Autumn (assuming Autumn was even a real person to begin with and not just some character that Rose made up), and that Rose got all of that info about me and my dad from my brother. But, like I said, 13-year-old me was very gullible. Not only that, but, if it was all a prank, then it still feels weird that Rose would just keep this little hangout site going for so long before suddenly pulling all this on me after the three of us had already spent so much time just hanging out. I also don't know how Rose would have that much info on me and my family unless my brother was also in on the prank -- seeing as how my brother and Rose hadn't interacted much with each other at all since their breakup, so I don't know why Rose would go through so much effort to remember all of that info about us just for a prank like this. Also, my brother always seemed to be more affected by our dad's death than I was, so him pulling something like this just doesn't at all seem like something he would do...
Obviously I wasn't killed by any curse or anything, and all of this sort of faded away pretty quickly, as I had basically dropped contact with Autumn and even Rose. But, yeah, it was pretty freaky at the time...