Complex sentence: Fry threatens to breathe fire on the Robot Elders, throwing them into a state of confusion as none of the Elders can remember if humans can actually do that or if is was something they made up.
Split into simpler sentences: Fry threatens to breathe fire on the robot elders, throwing them into a state of confusion. None of the elders can remember if humans can do that or if is was something they made up.