So I get night terrors a lot, and here's one thats really really freaking me out right now, and I'll explain at the end. (Its in second person POV)

You wake up in a field of small, beautiful, yellow flowers. Most of them only have 3 or 4 petals, but some have 5 or 6. You sit there, looking around. Next to you are two tracks for trains. One on your left, one on your right. In front of you is a junkyard filled with dark purple, maroon, and navy colored metal, boxes, and other things you cant make out. Behind you is a never ending void of blackness. Suddenly, the trains start moving, and you see four things on skate boards trying to dodge the trains. A person in a green shirt and brown bellbottoms, a brown great Dane with black spots, a small, chubby-like skeleton in a blue and white hoodie, black basketball shorts, and pink slippers, a tall skeleton with orange armor and cape all thread in and out of the trains, doing various tricks. The person in the green shirt got in the trial of the right train, and was gone. Turned into white dust. you hear a scream, shoot your head forward, and darkness.

Next thing you know, you're trapped in a box. Around you are huge, thick, green vines with thorns. In front of you is a TV stand. Surrounding the darkness in between the vines and the stand are eyes. All shapes, sizes and colors, surrounded in a pink/tan sleeve. They stare at you, waiting for your next move in this battle of never ending sleep. You look up, and see a huge screen, with big yellow petals growing out of a light green rim around the screen. On said screen is a giant purple/black spider. it has fangs, the biggest you have ever seen. A tall tophat rests on its head. It started talking in a language you dont know, but it sounds familiar. You can make out words. 'Sacrifice.' 'Family.' 'Heart.' and 'power.' You black out again.

Next, you are sitting around a bubbling volcano. People surround it, singing, almost chanting 'oh, lord, I wanna go home, let me go home.' They finish, and you fall into the hot lava.
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So, that was it. Here's the explanation why I'm freaking out currently.

So, this happened about two years before undertale came out. The yellow flowers are obviously the ones from save points. Then, sans and papyrus. The two skeletons. The junkyard from the mad dummy. White dust when they die. So, next scene. Undeniably the mega flowey boss fight. That is all of the undertale mentions.

Scooby doo plays apart of this. The trains, they were in one of the movies. Shaggy and Scooby are there. Thats about it for those.

The giant spider. its from a game which I can't remember the name of. you basically go around chasing a marshmallow person In a tophat, it leads to a giant spider getting the hat.

The volcano. Its from a movie scene in el Dorado where they almost get sacrificed.

The song. The song is one from those shows you would watch as a kid, it isn't kidzbop, its actually really good. They have shows to go along with the songs and their slogan is 'music made by kids, for kids.' Its called kids songs.

this was really weird, sorry lol. Hope you enjoyed.