I'll go first.
Maybe not the weirdest, but what got me thinking about this is the couple of nightmares I had last night. The first one's kind of gross, so yeah. Be warned.
I was hanging out with a couple of friends and relatives, and at one point they were running and I was riding a dog to catch up with them. No idea why, but it was kind of awesome anyway. When I caught up to them, we all sat down in doctor's office type chairs (though we were outside in the middle of nowhere), and I happened to notice a cut on my arm. It wasn't big or bleeding, so I forgot about it. Then another one appeared on my other arm. It looked really deep but still not bleeding. Then...the skin around the cut started melting. I didn't freak out but merely watched it spread. I finally showed everyone what was going on, but at that point most of the skin on my arm was falling off. It was...unsettling.
The next dream was about tornadoes. I've always had a fear of tornadoes, growing up in Indiana. I was at a Best Buy with my boyfriend, and when I went to leave, the building was surrounded by huge, black tornadoes. We ran back inside, only to find out that the whole building was covered in windows and there was no basement. When we looked back outside, the tornadoes had come together into a big circle-y thing in the sky and it looked like aliens were about to attack or something. Then someone pointed out that it had all been a big advertisement for the movie "Skyline." Sigh. Damn my dreams.