There wasn't even the slightest twitch at the pinch, though Megatron reflexively grabbed the offending hand and gently squeezed it as he laughed, a smirk on his lips.

"Unless you have a penchant for spanking you haven't told me about, or would like to punish me for... inappropriate behaviour with your person," he smirked, still shameless, "then I haven't started anything, merely given you an incentive to get back to work." The tone and the glitter in his optics belied the "innocent" words, though he was serious. They really didn't have time to actually get too heavy here and now.