As more characters succumb to the Jibblies, Strong Bad tells Homestar that the only way for them to survive is to live underground and evolve into "mole people".
Bubs is dressed up as Ross from this show. At the end, Marzipan says "I don't know" (in response to Bubs asking if she knows who he is) and gets slimed for it, followed by Strong Bad saying Barth the Chef's line, "I heard that!"
In the teaser, Strong Bad is dressed up as the Xenomorph. In the actual cartoon, he is dressed as someone else, because the store was sold out of the Xenomorph costume.
Coach Z says, "There's no safer place for a pretty young thing like me than in the shower." As in the movie, the shower is where the painting casts its spell on him.