"Luna, sister dearest, why are we standing on graham crackers?"
Princess Luna looked down at the graham crackers that had been temporarily substituted in place of the space-time continuum. Then she looked back up at her sister. Of whom was currently eating the substitute for the space-time continuum.
"What?" Celestia said through muffled chewing, "I got hungry. It's not like I've become a devourer of worlds or something. It's just graham crackers, Lulu."
Luna narrowed her eyes as she swore she heard tiny screams.