Merry Christmas guys! Here's my present I planned for you! Sorry it's a bit late :)
(Also, to re-quote an important detail from the description, "A really important change though, is that Ford told Dipper about his past with Bill in the end of dungeons dungeons and more dungeons. Ford shows him his private study sooner and so Dipper sees the Bill pictures and asks about them. So Dipper knows of Ford's past even before the last Mabelcorn.")
Ford was furious. How DARE Bill use his nephew to get to him! He promised himself that he would never summon his former muse again. But in a situation like this, there were just some promises that needed to be broken. He went down to his private study, and then got everything ready to summon Bill. While there were many common methods to summoning him, Ford knew of a few others due to having a personal connection with him for so long.
In this case, he wanted to talk with Bill, but not let him into his mind. He had to either transfer his consciousness into the mindscape, fall asleep, summon him the less forceful way, or create a completely separate pocket reality that both his and Bill's minds would be shifted into. For this case, he decided to use his emergency way of summoning him, which was similar to the regular way but much more forceful. It would let Ford see into the mindscape and pull Bill to him more forcefully than anything else. He closed the door behind him, sat down on the floor, and kept repeating the words to that spell:
elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT elgnairT si yek ehT
Suddenly, Ford saw a familiar glow.
Meanwhile, as Dipper was crying in the mindscape, he suddenly was in pain. He was being yanked somewhere, and the more he resisted, the more it hurt him. Before he could process what was happening, Bill floated behind him. Dipper yelled over to the triangle angrily. "BILL, WHAT'S HAPPENING?!!" Bill smirked. "I TOLD YOU, AS SOON AS SOMEONE SUMMONS YOU THEN YOUR LITTLE BREAK WILL BE OVER!" Dipper was trying his best to resist and the pain was only getting worse. "YEA, BUT THE SUMMONING WASN'T THIS FORCEFUL OR PAINFUL BEFORE!"
Bill chucked. "OH, THAT? YEA, IT'S A LOT MORE FORCEFUL WHEN YOU ARE BEING SUMMONED IN A MORE URGENT WAY! MEANING, THERE'S ONLY ONE POSSIBLE PERSON THAT COULD BE SUMMONING YOU RIGHT NOW KID!" Dipper froze. "OH NO." And then, he was yanked out of his dreams and into the summoning.
Ford saw the little triangle appear. His eye was closed and he was still fading into view. Dipper now understood what Bill had meant. By giving him even the slightest way out of the game, he had made it even harder for Dipper. By forcing him to interact with people that he knew personally. Mabel was one thing, considering that Bill didn't bother her much. But Ford. Ford HATED Bill. And Ford was also the only person that Dipper felt had truly understood him. So to make Dipper live in the place of someone that Ford HATED was just cruel. But, cruel or not he had to do this.
He thought for a moment about using his new mindset again, but he decided against it knowing the risks. He did a summoning once. He could do it again. He just had to act cruel, maniacal, and chaotic. ....Towards Ford...who he cared about so much. Regardless, Dipper didn't have a choice to do this or not. And so, he did. Just like last time, he very slowly opened his eye and laughed like a maniac. Ford's expression was somehow getting angrier.
"QUIT THE LAUGHTER CIPHER! I KNOW YOU'RE THERE!" Dipper finished his grand entrance and then formed fully in his classic yellow colored form. He looked down at Ford. He didn't deserve this. Ford was one of the best people he knew, and now he had to make him suffer. Dipper sighed in his head and thought-processed what he was about to do. He decided the safest route was to use the knowledge that Ford told had him about Ford's and Bill's history. Meaning, he had to call him things like *Sixer* and *Fordsie.* He couldn't believe it. 'I'm really doing this.' Then, he grinned like a pysco, and started his performance.

YOU ARE READING
How To Be A Triangle
FanfictionWhen Dipper has to make a life risking choice, the world seems to point him to the last thing that he needs. Bill Cipher. Dipper swore that he would never make a deal with him again, but this time he's desperate. As a last resort, he makes a deal, o...