At The Shack
"I know we said we were gonna sit out this prank war between Mabel and Soos." Dipper called down to Wendy before he came downstairs, "But I'm beginning to change my mind."
He continues, "I mean, in practice it was big of us to not want to get involved. But we both keep getting caught in the crossfire."
As he makes it down the stairs he is covered in soot and bits of newspaper. He turns the corner and nearly runs I to Wendy. She is standing there with one of the Shack's tool bags, opened, and she is covered in a pink, glittery slime.
As she wiped some of the slime from her face, she said "Oh yeah, this means war."