The Secrets of
"Imaginationland: Episode III"

by Wild Willie Westwood, with sources from all over the Web

Butters shows that anyone can imagine anything and unimagine it as well, as seen by Steven's transformation and disappearance. He can't unimagine anything that someone else has imagined, though, only reimagine it.

"Don't nuke our imagination bro!" - could be a reference to "Don't tase me, bro!", uttered by Andrew Meyer, a University of Florida student, when police hauled him off firr not shutting up during a campus talk by Massachusetts senator John Kerry.

I guess they found Waldo... and killed him. :D

Kyle either has a new coat, or his old one healed itself.

Santa takes the one golden axe with him into battle, but when Butters thinks up the next character, the axe is back where it was before Santa took it.

Yep, the Cavity Creeps are from a touthpaste commercial: We make holes in teeth! Apparently, the techs in the portal's room and the General can't get it through their heads that Sector 2 is right next door.