Well, at least that tension, thick as it was, seems to have mostly passed quickly.

Zac can't help but look down at himself curiously as Katherine explains things, and once she's done, he pokes at his torso, making himself jiggle a bit in the process. "Well, good thing it's a metaphorical center, and not a physical one, or I'd be in trouble," he comments with a half-hearted chuckle - maybe the humor will help make things smooth over a bit better.