Dreams.

I was playing a computer game about Tom and Jerry. (In a world of my own imagination, because I haven't played any real ones, if they even exist). It had an open world where you could go anywhere at any time, but it was an arcade game. I was Jerry. Here and there, I was pursued by a cat who, for some reason, was schematic – a small black (exactly black, not blue) figure of a sitting cat, more like the Cheshire Cat, only without a smile. He didn't chase me; the game just had different puzzles related to the fact that I couldn't let him catch me. He could even sit next to me and not move, and if I did something wrong, I would just lose. We were in some strange place. It wasn't the home of a plump American aunt; no, it was some place from a fantastical arcade, some incomprehensible world, you don't know where you are, you don't know what to call it. There were some cliffs and black liquid below (under the cliffs?), which you couldn't fall into, or you would die. At first, I solved some puzzle, the meaning of which I can't even convey now. There was Tom and his mirror image; they were sitting opposite each other, and I couldn't do something so as not to end up with either of them, because the most real, most genuine Thomas was sitting somewhere else, where I wanted to go, but didn't, and he was invisible. But I did everything right (what exactly did I do?) and went on. There were some small catacombs in the cliffs where Tom chased me a little, and I was looking for something. In some of the rooms of these catacombs, there were square pools with gray liquid, which was needed for teleportation somewhere. The liquid was not harmful to health. At some point, I teleported somewhere, and a small action-arcade sequence began, where I was sliding down a hill, Tom was chasing me, I had to jump over obstacles and collect suitcases. I never understood why I needed the suitcases. Then we got to some place filled with pomp. It seemed that there was some huge teleport there. I had to get out of this location (so the world wasn't entirely open, although I could probably go back there if I wanted to, which made no sense, because Tom wouldn't be there anymore). I messed up and went to some other teleport, which sent me to the catacombs with the gray liquids. And from there, I somehow managed to teleport to who knows where and fell into the black liquid. My life bar dropped to zero, and I respawned not far from the teleport. Suddenly, something very scary started. I thought that either a large teleport had activated or the apocalypse had simply begun. Lasers (not dangerous to me) began to crawl across the floor, everything shook, and there were some sounds. And then I was violently thrown out of the dream into reality, where the phone's speaker was blasting grindcore just a few centimeters from my ear (it was "Straight In Your Face" by Distorted Impalement), and my sister was calling. It was really a little scary! I felt fear for literally half a second. Then it stopped :(
That's what it's like. Waking up to an alarm with a song, and even with grind.
So, I recommend it to everyone; you'll wake up almost immediately, sharply, with a clear mind, and you'll remember the dream in detail :>

Added 46 minutes ago
I remembered something else. I dreamed that I woke up, and a crowd of my classmates was walking around my house. I opened my eyes, and one of them was reaching into MY breadbox and taking MY loaf of bread to make sandwiches with MY cheese and MY sausage! What a jerk, I closed my eyes and continued to doze.
I didn't ask myself questions like how it happened that, having woken up in my room, I saw the kitchen, or "What are all these people doing here?". I just wanted to sleep