Megatron, frankly, was sort of stunned... and then had a hard time keeping the laughter in, even if that probably wasn't an appreciated reaction. When Optimus trashed, the hand the Prime was attempting to disloge curled tighter, thumb and index finger twining about the bars as Megatron's thighs tightened again to keep him in place. More for balance's sake than Optimus being able to toss him off, bound with low-effect stasis cuffs and laying flat as he was.

Some energon spilled over however, a comfortably warm spash of transulscent pink that landed in the center of Optimus' chestplates as Megatron let out the laughter he was trying to suppress. Straightening, he wiped up some of the energon with a finger from his free hand and perfunctorily licked it off before actually putting the cube within potential reach of Optimus, even chained as he was.

"I did offer it earlier, you know. And trust me, if I thought I could have waited until after you'd refuelled, on your own, I would have. This is a bit of a... delicate situation, however, but I can't stop you." He shrugged, again referencing the fact that Optimus could leave, wondering why he actually hadn't commed anyone yet, if only any of his consorts if he was so very angry at him.

Of course, when the gag went on, when and if they got there, Optimus would be well and truly stuck. But that was for then, not now.