1 Alvissa: We better get marching if we want to make the Badlands of Skrung before nightfall.
1 Lambert: We still have breakfast to eat!
2 Mordekai: Bleah. I’d rather starve than eat turnips.
3 Lambert: Just you wait until I chronicle the story of us starving in the desert because you refused to eat.
4 Mordekai: Yeah, that’ll be a turnip for the books.

I thought of this pun myself, although I'd be very surprised if nobody had written it down before.

So it's probably a re-turnip for the books.