[Stan discovers Mabel in Dipper's body watching Dipper in her body hanging out with her friends]
What's goin' on, Dipper? Ah, you're at that creepy age where you spy on girls, huh? Guess it's time you and me had a man-to-man talk - about the birds and the bees, you know?
[Cut to Stan opening a book called "Why Am I Sweaty?"]
I—I should really be going-
No way out of it. Look, it all begins with this little fella, the pituitary gland. He may be little, but he has BIG PLANS...
[screams]
[later; closing the book] And now you know where babies come from.
Goodbye, childhood.
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