One day in South Park school, you're just minding your own business and you see Tweek and Craig walking together. They're a really cute couple. But what if something changes?

It's night now and you all are asleep for school tomorrow until...

ZAP!

It's morning now and Tweek looks in the mirror

Tweek (in Craig's body): "AGH! WHY AM I IN CRAIG'S BODY?!"

Craig even wakes up and looks in the mirror

Craig (in Tweek's body): "What the-...I'm in Tweek's body?"

They both arrive at school after getting ready

Tweek's nervous

Craig's somewhat emotionless like usual