I used to love these threads on reddit. I'll go first.

This one is kinda mundane and is most likely a hypnogogic/pompic hallucination but it used to happen A LOT when I was younger and I kinda realised earlier that it's been a long time since I last noticed it.

So from about the onset of puberty till my early mid twenties, at least a few times a month I'd be falling asleep, drifting in and out of sleep, or even woken up by- my bed shaking.

Usually it was a steady-ish rumble, almost like being on a train, but like 1/10 times I'd wake up to my bed rocking like someone was shaking it.

It scared me a few times when it was particularly violent, but as I freeze up when scared I'd just be lying there terrified, wondering why the fuck this was happening and hoping the bed didn't start squeaking. Usually when this shaking happened though it was just a thing I noticed, filed away as a curiosity, and tried to go back to sleep.

This happened in probably every place I lived (which was a lot of places as I was moving like 2 or 3 times a year most years from about 11 till 16, then less so as I got older) and mostly around the south east of England. And I very rarely lived on a main road with heavy vehicles on it or by railways either, so it wasn't environmental. We do get the occasional very minor earthquake here every ten years or so, and it's a similar feeling!