Strangest dream I have ever had was when I was in college. It was summer break and it was one of the two years I worked at the laundromat, so... 2005 or 2006? Anyways. The dream started with me lined up with a bunch of pretty generic looking "high school kids": the jock, the prep, the rich popular girl, etc. And they were all talking shit about how they were going to beat everyone at something. Then out of nowhere I said "that's nice, but I'm dreaming, so this isn't real". It's the only time I think I've had a lucid dream experience, but since I didn't know how to control it... yeah. So there's a horn and we all take off running through what was either a prison or a really depressing and windowless high school. As I'm running through this building, I become aware that I'm supposed to get outside first. So I set out to do just that. Somehow, someway, I manage to accomplish that, and as soon as I get outside, I see there's a flying pirate ship with my friend S from high school wearing a wedding dress. Apparently I was supposed to be on board, but I was like "dafuq S you're never getting married we all know that" and the ship flew away without me.
As I watch the ship depart, I turn around and there's a huge stone. Again, somehow I become aware that I'm supposed to write my name on it. So I go over to do that when I realize there's a woman crying behind it. Like the world is ending, just lost everyone who ever mattered, sobbing. So I try to comfort her instead of writing my name on the stone. She looks up at me (and she looks just like Gaia from Captain Planet, wtf), points at my throat, and shrieks "YOU HAVE CANCER" before shoving me away. And off the island in the sky. Which apparently at that moment became an island in the sky. Again. WTF.
tl;dr I woke up to my falling out of bed, and halfway through my shift I developed a massive lump on the side of my throat Gaia pointed at that ended up being the result of a nasty sinus infection, but Christ if I wasn't paranoid at first.