
[Found here.]

[Found here.]
This has been circulating on the TwitX, so click it first:
I wanted to suss out the song, so I stripped the audio, slowed it down, increased the volume, then pasted it back into the video. Sounds like two teens blasted out of their minds.
“Welcome to McDonald’s?” No idea.
[h/t Charlene604 for linking to the original.]