Here is the second chapter.
I own nothing of this.
Dipper's Guide 2: tooth
[Static. The camera shows Dipper at the lake.]
Dipper: Welcome to Dipper's Guide to the Unexplained, Anomaly #42: The Tooth. I'm here with my brother Lincoln as Cameraman and Mabel. [Lincoln points the camera at himself with a thumbs up and then points at Mabel, who was poking a giant tooth with a stick.]
Mabel: I'm here for scale!
Lincoln [off-screen]: Luke and I found it yesterday when we were, uh… practicing.
[Static. Cut to a clip of Lucas playing a Sousaphone while Lincoln is dancing in an outfit like he did in 'Making the Case'.
Lucas [stops playing and points]: Hey, is that a giant tooth?
[Static. Back to the present.]
Dipper: Strangely human, buts it's gigantic! It's bigger than any fish or Lake Monster we've ever seen. And we're gonna find out where it came from!
[Static and scene shows inside the bait shop with McGucket's son Tate.]
Dipper: We were thinking about paddling out on that lake tonight.
Tate: Bit of friendly advice, boys: if you see bubbles on the lake, run.
Lincoln: Why's that?
Tate: Enough question, get that camera out of here!
[Static. Dipper, Lincoln, Mabel and Lori are back at the lake during night time.]
Dipper: We're here at the lake to investigate. Lori came so she could watch up while I brought Mabel and Linc for backup.
Leia: and I brought Bear-O, my adorable childhood puppet. [brings up Bear-O.] Hey-oooh! Ain't that right, honey? [As Bear-O] Did somebody say… honey? [Normal voice] Ha, ha, ha, ha!
Lori [shutters]: Get rid of it.
Lincoln: No one likes Bear-O sis.
Mabel [As Bear-O] But guys, who could hate Bear-O?
Dipper: I could think of a few people.
[Static. Leia is on stage with Bear-O surrounded by kids and Lola and Lana.]
Mabel [singing]: They're quite a pair, Mabel and Bear-O. Her un-bear-lievable bear!
[The kids are crying while the twins are shaking and looking scared. One of the kids runs away crying.]
Mabel [Too her sisters]: What do you guys think of Bear-O?
Lola [frightened]: Get that thing away from me!
Lana [scared tone]: I'm going to have nightmares.
[Cut's back to the group.]
Leia: Aw, come on! You'll see! You guys, me and Bear-O, are the adventure team of a lifetime!
[Static. The siblings are on a boat. Bear-O could be seen on shore and Mabel is shown have a disgruntled look. Lincoln and Lori are rowing.]
Lori [mildly annoyed.]: This literally better be worth it.
Lincoln: It will sis. We'll find out who left that tooth.
[Leia holds up a sign that reads: DO YOU WANT MORE BEAR-O?! LET YOUR VOICE BE HEARD WRITE: Leia 'Mabel' Pines, c/o, Mystery Shack, Gravity Falls.]
Dipper: No, no come on! [Grabs sign. Static]
Mabel: What are we supposed to be looking for?
Dipper: I don't know, just look for bubbles in the water.
Lincoln: Didn't that guy warn us not to look for those?
[Bubbles come up near an island.]
Mabel: Guy's, look!
Dipper: They're over by that island! We have to see what happens!
Lori: No way! I'm in charge and this is as far as we go.
Dipper: But Lori-
[The island shakes.]
Lucas: What was that?
Leia: Ah!
Lincoln: What's happening!
Lori: DON'T CARE! ROW! ROW! ROW!
[They paddle as he island rises out of the water to reveal it's a head and it floats to the boat. And it grunts something backwards.]
Island Head: You have disturbed my slumber. Enter my mouth, children! ENTER YOUR DESTINEY!
Mabel: AAAH! AAAAHH! AAAH!
Lori: Holy crap!
Lincoln: PADDLE!
Dipper It's getting closer! KEEP ROWING!
[Static. The camera is on the ground. A Crawfish crawls by and Dipper comes into sight. He spots the camera and picks it up.]
Lucas: Okay, after it attacked us, that giant head thing just sunk back into the lake, and it lost another tooth, while it tried to eat us.
[Shows the boat was destroyed by the tooth. Lori and Lincoln inspect it.
Lori [Groans in anger.]: Great! The boat cost us, literally, 20 bucks!
Lincoln: At least we survived. Well, barely.
[Mabel pops up with Bear-O.]
Mabel [As Bear-O]: Did someone say, bear-ly?
Dipper, Lori and Lincoln: AAAAH!
[Static and it ends.]