Spoiler Warning! Very, very subtle hints to the ending; next-to-no spoilers.
(Spoilers contained in comments section.)
Spoiler Warning! Major spoilers about parts 1 and 2!!
Spoiler Warning! Hints at the ending of the episode.
Source: Clubhouse Magazine
Spoiler Warning! Contains clips from the episode.
Spoiler Warning! Contains clips from the episode and explanations for the ending.
NOTE: This post is 19 minutes and 32 seconds long. The initial reaction is the first minute and thirty-five seconds. I would have liked it to be on the AIOWiki Podcast, but due to time constraints I had to just do it by myself.
Spoiler Warning! Contains clips from the episode and references to the ending.
I guess cupcakes do have cream filling.