"Fuck."

The word, whispered, was pulled out of him like the tugging of his earlobe between Mycroft's teeth.

The feeling was like a lightning bolt that shot from his head to his groin and his hips jerked upward, meeting Mycroft's hips and rubbing. The feeling sent another shockwave through his body and he let out a groan he felt in his toes.

"My...Myc..." Mycroft moved his hips again and Greg's voice gave out, his hand cupping the back of his neck to pull him back towards his lips.