"When I was about 16, my little brother who was six at the time started telling me about a "rabbit" who would come and visit him. I blew it off thinking it was his imagination.
The next few days it's all he talked about and how the rabbit would open a hole in the wall. He said he left his body and went through the hole, and the rabbit showed him places and told him things that, when they got back, he couldn't remember. I just told him he is probably dreaming all this up.
That night, there was scratching on the wall in my room. I looked around and couldn't find anything making the noise and decided that it must be something outside or a mouse got inside the wall. Well, it just got louder and louder until I finally got dressed and went outside. Nothing was there. I went back in my room where the scratching was still going on. I hit the wall a few times, hopefully scaring away the rodent. It stopped for a few seconds and then continued. It kept going until around 3 am - then, it stopped completely.
The next morning, we were eating breakfast and my little brother didn't say anything about the rabbit. As glad as I was to finally not hear him talk about it, it just wasn't normal, so I asked him, "Didn't the bunny see you last night?"
Now what he said chills me even today. He said, "He didn't take me anywhere last night. He told me he was trying to see you, and you wouldn't let him in. He said you tried to hit him."
After that, I started asking questions about this bunny. All I got was that he would take him places and tell him secrets. The stuff he learned he would forget when he came back. Also, the bunny wasn't just a bunny. He supposedly looked like the guy off of Donny Darko, but a more realistic version - but the movie hadn't been released yet.
The bunny finally quit coming around after another week. When he tried to get my brother to "come live with him," my brother said no and that he wanted to stay with his mommy and daddy.
The bunny has never been back since. Sadly, my little brother passed away 10 years later."
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From @israelshedi