Point of View: Mabel
I was flipping through a scrapbooking book that girl Abigail had shown me when I heard yelling coming from the direction in which I had left Dipper. I rushed over to see Dipper who had grabbed Will by the arm, Will looking at Dipper in a way that was in between apology and hate, and Abigail just sitting there staring at it all. "WHAT THE MABELJUICE IS GOING ON!?" I screamed, and everyone stopped. Some people around me shushed at me.
  Dipper's face turned red. "Nothing, j... just go back to your scrapbooking!" He exclaimed and let go of Will. Abigail chewed furiously on her hoodie string and hummed to herself, seemingly the tune of Fireflies by Owl City in hyperspeed. I didn't believe Dipper's 'nothing' one bit, but I guessed it was best to just go. So I did.

Point of View: Bill / Will
As soon as Shooting Star disappeared back to the Art section of the library, I glared down at Pine Tree. "Okay. Caught me." I rolled my eyes. Then I glanced at the other girl. Strange. She was ugly, I could tell, but her face was partially hidden by her hoodie, so I couldn't see all of it. She was humming some human song and chewing on her hoodie. Was she insane like me?
I focused back on Pine Tree, who was just staring at me. "So, was I right? You here to kill me?" He asked. I snorted and pulled off his pine tree hat, messing up his hair, and putting the hat back on.
"Nah, doesn't sound like much fun." I responded in a cheerful manner. It wasn't how I felt, this happiness, but I wasn't exactly sure what I felt, angry or sorry or that other thing... embarrassed? It was a different feeling, like a mix of them and other stuff, but instead I decided to act happy, one of the few human emotions I knew how to portray.
"I'm here to be just plain annoying, or maybe even go as far as to make your life a living hell. I suppose your choices will pick which one." I said. The girl kept staring at me. I reached into her mind.
"Okay. Dipper was right, this is a freaking demon. Dipper has a crush on a freaking demon. Okay, then. I kinda shipped it until... well that dude turned out to be a demon! Waiiit... I can still ship it, right? Bill and Dipper... what kind of a ship name could that be? Dipill? Nah. That's stupid. Bipper? No, that can be used somewhere else... ooh I know. Billdip! YESH! I will now start fangirling. Ooh, maybe I can become Dipper's friend and I can give him dating advice on how to keep a boyfriend. Oh wait. The only boyfriend I ever had cheated on me with my best friend... okay never mind!..."
"GAH STOP IT UGLY FLESHBAG GIRL!" I screamed at her. She seemed to shrink down, and began biting at a random pencil I can only assume she found on the library floor. "Your thoughts are so loud and annoying, surprising since you haven't physically spoken a word so far. Wait..." I muttered, thinking about those first thoughts. I leaned in close to her face. "Did you say Pine Tree - Dipper - has a crush on me?" I whispered.
She gave me a strange face, like she was an innocent little child and an insane demon at the same time. "Mmaaaaayyyybbbeeeee." She said calmly. In her mind, she was thinking, "OH MA FRICKIN GAWSH FSKKSKSKS HE CAN READ MY FREAKING THOUGHTS AND NOW HE KNOWS DIPPER LIKES HIM WAIT HE CAN SEE THESE THOUGHTS DANG IT FRICK ME BAD ABIGAIL AAAAAAAAAA!"
"What are you talking about?" Pine Tree asked.
"NOTHING!" The girl and I yelled at the same time. This was gonna be interesting. The girl I assumed was named Abigail because of her mind yelling began speaking again. "Soooooo, Dipper, uh and Bill... nice to meet you? I mean, I kinda don't know what to say to a demon... or just a regular person." She started scratching at her head.
"Do you have lice or something?" Pine Tree asked her. Lice? Like those bugs that cause your head to itch so much you basically suffer? I need those... I thought.
To my sadness, Abigail shook her head. "No. It's some kind of skin condition that makes your skin fall off, can't remember what it's called. I have it on my head, though more commonly seen in old people. My grandma and great grandma have it bad, and so does my aunt. It makes their head bleed. Does it to me too, but not as much. Mainly itches. So scratching it is a nervous habit. One of my many nervous habits."
I could list them so far that I had seen; chewing on hoodie, tapping feet, chewing on pencils, humming, scratching her head, picking at strange bumps on her arms... wow she must be nervous a lot for her to come up with so many! I noticed the awkward silence...
"YEET!" I screamed and threw a shoe at Pine Tree. Where did the shoe come from, you may ask? I'm a demon. Figure it out.

Hey guys, just figured out that I could use all three of these things at once! Also, count the words. What's the 666th word? Bill. It's flipping Bill. No, that was not on purpose. It just happened. Cya in the next chapter! Sorry if this one was a bit short, I just saw a perfect ending and I used it. Also I've been making chapters that were over 1,000 words recently and I don't want you guys getting used to it. I only do that when I'm in a good mood, so never. Also my cat scratched the HECK out of my face today, so my face is bleeding. Jeez Raven, all I did was put a harness on you so you wouldn't run into the woods! She-cats, honestly, ugh. Yep, I am making Warrior Cats references on a Billdip book. And now it's over 1,000 words DANG IT BYE!