Megatron's 'retaliation' made him groan, frame shuddering as he held his own building overload at bay. It was getting so very hard - but he wanted Megatron to overload first.

He continued his thrusts, the pace growing harder and more frenzied- he reached down with a hand, hiking Megatron's thigh higher up over his hip, letting him strike more deeply into his valve with each thrust.

Growling against Megatron's throat, he slammed his hips home to the hilt, charge starting to trickle out into that valve, past his control.

"Megatron. Now. Now."