He had to keep from shifting in his kneel to ease the building tension from his lack of sight, but this, like the taunting need to flare his field out was all part of the punishment of course.

If a punishment didn't affect him, it'd be quite useless, after all.

"Challenge, more like," Megatron said after a moment, the tensile cables in his thighs tighening and he had to consciously relax them so he wouldn't shift - either closing the spread thighs or widen them, "not because I don't want to be here, because if that was the case we wouldn't be doing this at all. More a test of your resolve."

Dropping his voice into a purr to accompany his engine, Megatron let go of some tension, concentrating on the other sensations which were far more pleasant than his discomfort over the lack of visual input.