He really didn't want to sit down. In fact, he thought sitting down was possibly the worst idea in the entire world. Well, next to admitting that sitting down was going to be a pain in the ass - or just plain be a pain.
So, he sort of tipped himself back, grimaced and turned even more pale in the doing of it. Once he was down though it was better, so long as he didn't have to stand up again.
"Thanks," he told the younger Jack, took his water and drank gratefully. "You expecting to be hit, or just skittish?"
Like he wasn't pissy enough to smack things just for being in arm's reach.