The entire show is Angus' Dying Dream
Angus died the moment his ship crashed into Mt. Middlemost, and the series was All Just a Dream. Adding onto this, Angus takes LSD and that's why the show is so trippy.
A future episode will give us Parker trying to become friends with someone he met before he was reformed.
It would make for a pretty good emotional episode, having Parker be forced to deal with his past and really prove he did get better.
Confirmed with “Dentist Trip.”