Jolting with the bite, as well as giving a little nh noise that failed at sounding more put out than turned on, Jack paused a moment before sliding his hand up under the garment and against the warmth of his skin. Lightly, he scratched against the welcome warmth of his skin with short, blunt fingernails, working up one flank and down the other.

"No need to chill your delicate hide," he mused, pausing a moment to take a light pinch of the skin over his side - or try to, at least. "Huh. Why are you thinner, anyway?"