Dipper and Mabel have gotten into some rather tight tensions lately. Mabel has been having Candy and Grenda over for sleepovers nightly, forcing Dipper to sleep outside. After one such sleepover, Dipper demands that Mabel stop. They go to the reasonable (read: wants everything on TV to fight) Grunkle Stan to settle the affair. As Grunkle Stan declares that there is nothing that they can do, Soos finds a mysterious room in the shack. Dipper and Mabel begin fighting over who gets the room.
Grunkle Stan declares that he will give the room to the biggest kiss-up to him. Dipper is confident that he will get the room, and rubs his socks on the carpet in the room, as a mode of relaxation. However, Mabel catches him, and the two's argument causes their hands to make contact, causing a release of static shock... that causes the two to enter each others' bodies. Apparently, the carpet has body-swap powers that causes bodies to swap if they touch. They take advantage of this to sabotage each others' attempts to get the room.
Meanwhile, Waddles and Soos wind up swapping bodies. Waddles-In-Soos manages to meet an attractive tourist, while Soos-in-Waddles is almost eaten by Old Man McGucket.
Back at the Shack, Candy and Grenda come over for another sleepover, and Dipper-in-Mabel is traumatized by the fact they are going to read age innapropriate romance novels. Mabel-in-Dipper is caught spying on Dipper-in-Mabel, Candy, and Grenda by Grunkle Stan, who reads "him" a book on puberty. ("Goodbye, childhood.") Mabel-in-Dipper then calls out Stan, causing Dipper to win the competition. Mabel then seems to hand Dipper the key, but locks herself in there. To break down the door, Dipper-In-Mabel tells Candy and Grenda to give Mabel-in-Dipper a makeover. One electric shock later, and the status quo is restored.... until Candy decides to test the carpet herself, touching Dipper.
Meanwhile, Waddles-in-Soos, Soos-in-Waddles, Deputy Durland, Sherrif Blubs, and Old Man McGucket (who was about to eat Soos-In-Waddles) wind up in the room, and rampant body swapping ensues. However, it is all sorted out, and everyone winds up back in his/her correct body, but Dipper and Mabel still fight over the room. After a brief skirmish over the room key, they both realise that neither of them wanted to move out of the attic. Mabel surrenders the room to Dipper, but he winds up moving back into the attic before the first night is over, due to the sheer loneliness of the situation (both feel lonely that night). Dipper ultimately gives Soos (who is confused over the fact that he is engaged) the room.
Tropes in this episode:
- Anything but That!: When Dipper realizes Mabel is having a sleepover he lets out a terrified scream, and goes to sleep outside. He gets his leg gnawed on by a coyote (and later at night attacked by other animals), but still decides it's better than sleeping in his room during the sleepover.
- Be Careful What You Wish For: Soos cites this as the Aesop of his own little subplot. How much he actually took it to heart is a matter of debate.
- Big "NO!": The second act ends on three simultaneous ones, from Dipper-In-Mabel, Mabel-In-Dipper, and Soos-In-Waddles. The last of the three kind of invokes it.
- Black Comedy Cannibalism: Old Man McGucket was willing to eat Soos even after he was back in his human body.
- Board Games: Grenda, Candy, and Dipper (in Mabel's body) play one with a tween-dating theme.
- Book Ends: The episode starts and ends with the twins accidentally smashing their window with an eyeball that hits Stan.
- Brain Bleach: Mabel's reaction to having The Talk with Stan.
- Continuity Nod: Waddles is seen wearing the top hat that Quentin Trembly gave to Mabel in "Irrational Treasure".
- The heatwave from last episode is still on, as Stan mentions "searing 105 degree heat" outside.
- Cue the Flying Pigs: "Dudes! I found some kind of secret hidden room in the shack!"
- Expository Hairstyle Change: When Dipper and Mabel swap bodies, the ends of Dipper's hair become curly like Mabel's, while Mabel's hair becomes scruffier at the top and back to mimic Dipper's.
- Eyes Are Mental: The characters, when swapping bodies, tend to not just switch voices, but other aspects of their eyes and face tend to go with them (characters Dipper end up in, for example, tend to have bags under their eyes).
- "Freaky Friday" Flip: Between Dipper and Mabel, and between Soos and Waddles. Until the final act, that is; at that point, it's between everyone except Stan & Wendy.
- Freak Out: The second Dipper and Mabel realize they swapped bodies, they... don't take the news well.
- Freeze-Frame Bonus:
- One page of Grunkle Stan's book on puberty has a cryptogram that translates into "PUBERTY IS THE GREATEST MYSTERY OF ALL. ALSO: GO OUTSIDE AND MAKE FRIENDS."
- Mabel prepared numerous romantic comedy movie DVDs, with titles such as "Boy Cray Cray", "Smooch Town", and "Oh No, She Di'nt".
- "Getting My Own Room" Plot: The plot is kicked off by Mabel and Dipper both wanting to get a room of their own. In the end, however, both twins change their minds and decide to again share the attic bedroom.
- I Taste Delicious: Grunkle Stan's reaction to Mabel making him an omelet shaped like his face. "Those cannibals were on to something!"
- Innocence Lost: After hearing where babies come from from Stan, Mabel mutters to herself "Goodbye childhood".
- Just the Way You Are: Mabel tells Grenda that she doesn't need make up, since she's already so beautiful.
- Laugh of Love: When Waddles in Soos' body runs out of the gift shop when a lady stops by to ask for directions, she says "You'll show me the way? [giggles] Such a gentleman!" before following him out. She shows up again at the end of the episode and happily accepts Soos' apparent marriage proposal.
- The Makeover: The girls try to give one to Dipper. Grenda seems to want one too.
- Messy Pig: When Soos in Waddle's body finds a mud puddle, he asks "Do I dare live out the cliché?" and dives in.
- No Antagonist: The closest we get to one in the episode is Old Man McGucket, and even then it's just because he tries to eat Soos-in-Waddles.
- Noodle Incident:
- While in Soos's body, Waddles somehow did something that made the lady think he was proposing to her.
- Just who or what was Grenda kissing in that closet?
- No, You:Mabel: The judge says it's out of bounds.
Dipper: No, you're out of bounds!
- Ow, My Body Part!: "Oh, my head! It hit me right in the head!"
- Rule of Three: Mabel, Dipper & Soos all do a Big "NO!" (Mabel in Dipper's body, when Stan hugs her, Dipper in Mabel's body, when Grenda says there's more books to read, and finally Soos in Waddles' body, when he's tucked into a corner, about to be eaten by Old Man McGucket.
- Slumber Party: Mabel throws one with Candy and Grenda.
- Springtime for Hitler: After switching bodies, Mabel decides to sabotage Dipper's chance of getting the room by insulting Stan. This backfired, with Stan being impressed that "Dipper" is standing up to him, and gives "him" the key to the room.
- The Talk: Grunkle Stan decides it's time to tell Dipper (read: Mabel) about "the birds and the bees." Mabel is, of course, traumatized.
- Tempting Fate:Stan: What do you think? There's some kind of secret hidden room in the shack?
Soos: Dudes! I found some kind of secret hidden room in the shack!
- Tongue Trauma: Dipper mentions that while he was sleeping outside, an owl tried to eat his tongue.
- Voices Are Mental: The voices switch along with the characters as they move from body to body. The voices are only switched for the audience, Stan doesn't seem to notice any change. Then again, Waddles!Soos can talk to Old Man McGucket.
- Vomit Discretion Shot: When Mabel seems to induce vomiting in an attempt to get Dipper out of her body.
- What Did I Do Last Night?: Mabel's reaction when she wakes up after the slumber party.
- Would Rather Suffer: Dipper would rather sleep outside and have a wolf gnaw on his leg than sit through Mabel's sleepover with Grenda and Candy.