A/N: Just an FYI, part of this story is based on another story just with my twist on it.
Dipper's POV:
Another fine day in Gravity Falls, Orgeon. Mabel and I were messing around with her grappling hook and spells from my book that were curable with. Mabel turned me into a Werewolf (again), and I turned her into a Deeritaur (( A/N: hey, let me have some fun here with my other fanfics!)), and some other stuff. Everything was fine, until this traveling salesman showed up.
"Hello, my name is Wilson and I think someone here likes spells, supernatural stuff, and other things like that!"
"Wait- how did you kn-" Again, cut off.
" I'm a physic, dude."
"Ohhhh!"
"I have this potion that turns anyone who drinks it, into a dragon!"
"Dipper, I bet your too scared to even drink a sip of it!"
"No, I'm not"
"Yeah"
"No"
"Yeah"
"Gimmie that!" I said snatching the potion bottle and swapping it with 10 bucks
"I'll take what I can get!" Wilson said trailing off.
I then took a couple gulps from the bottle "Tastes like pitt minus the fizz." I then felt my skin changing to scales. A tail growing, and my height towering over the 90 ft mark, wings growing, my body systems change to allow me to breath fire, gravity falls is just a model town compared to my height. I close my eyes one last time and when I open them again, I'm an 100 foot dragon with navy blue scales on the sides and orange on the belly and neck with a wingspan of 40 feet. A horizontal piller of fire came shooting from my mouth.
Mabel was trembling in fear as I lowered my head to her level "Oh, no. What have I done!" Are you kidding? this is awesome!