The end of the song is the beginning… starting with the Salvia flash. The twisted voice babbling incoherently, as the effects kick in. The rest of the song is the journey into Shpongleland.
Its almost like the song is telling a story backwards in time. I say this, because when you hear the guys voice coming in, its like his consciousness is altered after the flash. He’s not totally himself hence the strange sound of his voice. Then you hear the guy talking about taking “a really big hit,” which could mean that is the starting point of the song; since if it were the end (it is the chronological end of the song) it would seem like he should have taken the hit in the beginning of the song.
Theory: The song is a Salvia trip backwards in time.
Try playing the song backwards.
Alternatively: The strange babbling is the person regaining consciousness after the Salvia flash; then going back for more… Leading to the next song, which is like a hot air balloon ride into Shpongleland. Either way it truly is an epic journey.