"Fair. But, consider," they put up one index finger while still bent over, bracing themself against the cavern wall, "holographic food was probably doing something really weird to my system, so it's actually good that I'm purging it from my bowels."

Frisk pries themself off the wall, wiping the corner of their mouth and turning to look back at Chara. "And anyways, I've gotten a lot better recently, it's just... zombies. Eurgh. It's bad enough some of them look like people, but the fact that they have a tendency to gore-splode whenever they die makes for an unhappy Frisk."