Apologize for making him wait

"I'm sorry," you say, climbing to your feet. "I wasn't thinking clearly, I guess. I just wanted to wait for the naga venom to get out of my system."

"Oh, great!" the centaur exclaims, throwing his hands in the air and stomping one rear hoof. "That's just perfect. The venom has worn off. How am I supposed to work in these conditions?" He addresses this question to the ceiling, or perhaps the voyeuristic sorcerer. Either way, he receives no answer. He shifts his back hoof again, and you notice that he has a deep, knotted scar on his leg just below the knee, and from there down, his leg is noticeably wasted, the muscle almost non-existent. His leg begins to shake and he shifts his weight again,

"What happened to your leg?" you ask.

"This just keeps getting better," the centaur fumes, shifting his rear closer to the wall and leaning against the stones to take more weight off his injured leg. "When I was a colt, I was attacked by lions," he says, and now you can see silvery claw marks on his striped hide, and faded bite marks on his throat. "They nearly crushed my throat and chewed my leg off before the herd found me and drove them away. I lived, but it would have been **** to let them have me. I can barely stand, barely walk. I can't run, and I can't mount my mate, so what is the point of living, I ask you?

"That bastard sorcerer promised to fix my leg, good as new," he continues, "but how can I uphold my end of the bargain? Now that you know what a useless gimp I am, you're going to run away, and I haven't a hope of catching you." He suddenly makes a pained face and presses a hand to his stomach. "Great, now I'm getting an ulcer. There better be Timothy hay and yak milk in the break room when I get there, or you can find yourself another centaur!" This last part he shouts at the ceiling again.

"Why yak milk?" you ask.

"Yak milk is thicker than cow's milk," he says. "It coats the stomach better and neutralizes more of the acid-- Why are you still even here? Go on, run along. I'll not humiliate myself by trying to catch you."