"What... what is this, Pinkie?" Twilight asked, tapping at the near-invisible fourth wall barrier.
"The fourth wall, of course!" Pinkie squealed in return. "Try talking to it!"
Twilight raised a brow, then turned back to the fourth wall. "Um... hello?"
Silence.
She looked at Pinkie. Then to the wall again. "Pinkie, this isn't wor--"
Twilight didn't have time to scream as she and Pinkie plunged into the inter-universal fabric of the multiverse.