Had a rather pathetic dream, even by my own standards, that I had taken a time machine about 500 years into the future. I found myself in my campus library, which looked oddly similar to how it currently looks, only the floors had all been replaced with black marble and the wood furniture seemed a bit darker as well. I kind of just walked around and people-watched at first; some students studying quietly, a few writing reports together on lab computers, and then I came upon an area where a bunch of desks had been moved around to resemble a science lab, parallel rows. An instructor was teaching some new concept of physics that wasn't yet discovered in my timeline, by taking one of those face masks Japanese people wear, putting some kind of mini cauldron on top of the fabric of the mask, and then tying the elastic straps to the cauldron handle. Inside the cauldron was a small can-sized Brita filter, and when mineral-heavy water was poured in, the force of the metal ions being separated from the water (which produced two distinct halves within the cauldron) caused the filter to start vibrating like a dildo, which somehow imparted a force to lift the entire thing gently into the air, like a hot air balloon.
The teacher noticed me and said I wasn't doing any work, handed me the necessary parts as well, and assigned some cute Indian-looking (dot not feather) girl wearing a very low-cut dress to be my lab partner. I tried to explain that I was just a time traveller and not enrolled, but figured it was a waste of time. My lab partner was very friendly though I cannot remember any particulars except that she did that thing I've observed in real life where sometimes members of the female sex playfully shove a member of the male sex in the chest and laugh. As I assembled my machine I started to feel strong emotions somewhere between sadness, wistfulness, and nostalgia, though I remember consciously thinking that I shouldn't since I haven't enjoyed most social functions since pre-puberty. Then I got really nihilistic. I could see that this future world was more advanced and actually more productive and friendly than the world I had experienced, and so I thought I would test the value of my own existence post hoc. I first tried Googling (they still existed) my name and my family and found no results. But I figured that wasn't too surprising, and that a better test would be of testing the memory of broader culture. Then I somehow began playing Talk Talk's It's My Life, and asked them to identify when the song was from, based on the general sound and style of the song. They didn't even seem to understand the question, so then I asked them for a decade, "You know, the 2140s, the 2360s, the 1910s, whatever". No one was even willing to guess and I had to tell them that it was a quintessential 1980s song. I think people just started ignoring me at that point and so I left.
Had the dream ended around there I might have remembered more, and in more detail. It is difficult to convey but it was a rare dream that made me really feel feels beyond just badass monster-killing feels or horniness feels, and I wish I woke up there. But instead there was a change in scene, and I was at a train station which was supposed to take me to some kind of hi-tech nuclear power plant, where I could recharge my time machine and go home. But I noticed some random nude woman walking into a different train, and so I followed her to creep and stare at her butt. I sit down on a bench in the back of a car and then several more people enter, all lightly dressed or half nude. Two hunky surfer-looking dudes sit by each of my sides, with two bikini babe chicks standing in front of them, seemingly-drunk and sexually-charged. One starts talking about how horny she is and how she wants to fuck one of the guys right there, but then the other says something like "Oh Tom you got too much sun this time, look at your skin peeling off", and I glance to my lower-left to see the guy looks like he's covered in leprosy sores. She then starts peeling the skin off and says "Mmmm I'm hungry" before eating the flakes. Soon they're all naked, and I have to intently stare at some LED clock between two girls' tits to avoid the shame of actually looking at any of them nude and being caught. None of them ever speak to me, but then the conductor over the intercom makes some kind of statement like "Reminder to all passengers, this is a no-virgins-allowed train, so make sure to throw any virgins aboard out the window, that is all" and everyone starts saying "Hahahaha do virgins even exist anymore?" and stuff.
I manage to keep a poker face and my physical body survived the trip, but then the train let out and it was this open, steppe STALKER-esque wilderness, just a single long asphalt road out to the horizon leading to a glowing-blue-veined mountain, lots of tall grass, and some kind of abandoned gas station on one side. A rusty bar gate blocked departees from entering, and then some kind of zombie crawled up to the far side of the gate. It had inverted knees and elbows so that it crawled with its torso facing the sky, and every step it took caused it to do a kind of pelvic thrust. One of the guys on the train was like "Woah cool I'm gonna fuck it!" and so he stuck his cock through the bar gate. The zombie then gets up on its hands, legs in the air, and begins thrusting at the gate, apparently enjoying being penetrated. People start to laugh and then someone starts handing out beers and lawn chairs to everyone as the sun begins to set.
Then I woke up and masturbated. As a result of that, I had forgotten the earlier half of the dream until 4AM while brushing my teeth before bed, rather than 2PM, when I woke up yesterday.