The self-loathing Nazi brain in a jar goes back in time to kill itself, and hesitates.

“I can’t do it!” sobs the speakerbox of the headless corpsebot in whose chest it currently resides. “Suicide is a permanent solution to a temporary problem!”

“I don’t know what Gerry existentialist crisis he’s yappin’ about,” whispers American Haymaker, “but I say we strike now!”

“Hold on,” says Damsel Disaster (actually her granddaughter, here in disguise from an alternate future to make sure things don’t go too well).

“Ach!” shrieks the self-loathing Nazi brain in a jar, who just got its own pun.