In the garage, Rick's working on a new experiment that involves bananas and a new form disease.
Morty (coming into the garage): Hey, Rick, what are you working on?
Rick (happily satisfied): Oh, Morty, look at this!
Morty (looks at a banana in Rick's hand): OK, a banana, so?
Rick (opened a portal in annoyance): Just come with me, Morty. And take that box for me.
Morty followed Rick into another dimension carrying the box.
Morty (confused): Rick, where are we?
Rick: This is Petalburg City, Morty.
Rick prepared a banana milkshake stand before hand on the sidewalk and guarded by a Meeseeks.
Meeseeks (happy to see Rick): Am I done yet?!
Rick: Yeah, you are.
The Meeseeks combusted from existence and Rick puts on a beak mask.
Morty (confused): Why are you wearing that mask?
Rick (happily excited): I'll tell you later, Morty. Here, you put this on too.
Morty puts on the mask and smells something from inside of the mask.
Morty: Oh, smells like vanilla cookies in here!
Rick pulls out a digital boombox and plays Get Schwifty on it to attract people to the stand.