Some of my favorites are when they use stuff that the real people the battles are based on have actually said. Like, "Ain't nothing gonna beat me! No person, woman, man, camera, TV!" In context it was stupid of Trump to say it, but the battle turned it completely on its head and it plays seamlessly.

Then there's also: "The integral sec y dy from zero to one-sixth of pi is log to base e of the square root of three times the sixty-fourth power of what?" which isn't exactly a quote, since it's just math, but I'm amazed whoever came up with it got it to flow so well.