It was a beautiful day in Gravity Falls, but apparently not a beautiful enough day to make Dipper and Mabel go outside. "Hey Mabel! Check out this game I just got!" Dipper said. "Can't talk right now! I glued a macaroni mustache onto my face!" Mabel said. Dipper then walked over to Mabel and RIPPED the macaroni straight off of her face. "Can you come now?" Dipper asked. "Yes." Mabel said while whimpering.
They both went over to the computer to see a strange Mickey Mouse looking character with a cup for a head, and another Mickey Mouse looking character with a cup for a head. "What the heck is this?" Mabel said. "Can't you read Mabel? It's Cuphead!" Dipper said. "Can I play it?" Mabel asked. "Sure!" Dipper said.
After about an hour of playing Cuphead, Mabel threw the computer out of the window and ripped off the head of one of her stuffed animals. "Noooo!" Dipper screamed. His computer was completely destroyed, the key's on the keyboard were scattered, the screen was shattered, and the CD inside his computer was fractured. Dipper then looked like he was about to punch Mabel. "Uh. I'll buy another one." Mabel said. Dipper then threw Mabel out the window.