In The Youngblood Chronicles, when the cultists get a hold of the briefcase, they summon Xibalba who causes bloodshed and havoc...so what where Fall Out Boy originally looking at in the briefcase in the beginning of the video?
Maybe the ritual was necessary summon Xibalba and just opening the briefcase wouldn't let the demon out?
Patrick starting off Rat a Tat with "Are you ready for another bad poem?" might seem like a self-depreciating reference to the song itself. However, Rat a Tat is near the end of Save Rock and Roll. On previous FOB albums, they would have a song near the end where Pete launched into a dreary spoken word segment to cap the song off...which Save Rock and Roll and albums released afterwords lack. It's self-depreciating for a different self-referential reason!