A/N: ...I apologise to my entire family.

-w-

It was, uh...

He could explain.

It was definitely Zero's fault. Definitely. X had just been trying to study, like they were supposed to, and Zero had done most of the homework already so about fifteen minutes in he ran out, and when he ran out of things to do... stuff... happened. Distracting stuff. Stuff that was... not helping. Okay, he answered X's questions on the hard-the-the difficult bits, but he kept answering them all... low and breathy and right in X's ear and X couldn't help it if that kind of made the information go away. And then math happened, and Zero started purring statements about lying tangent to X's curves-which he didn't have, he just had more of a butt than Zero did, that was it-and X was blushing and thinking about things that weren't AP Calc., and then he realised that the next subject was physics and if Zero could turn him on with wiggly lines what could he do with friction and momentum and-and heatisthelowestformofenergyitwillconsumeeverything itwillbecomeeverything and damn it the inevitable heat death of the universe was supposed to scare him not make him think about-about things that would-

So when Zero whispered the third line about exponential growth and integrating natural logs and, and whatever, X had to do something. And, um, the bed was a good distance away from the desk, and there was the, uh, bungee cord he was trying to make a hammock out of, and Zero's voice could carry even when he was being all quiet and seductive and stuff, so X kind of had to... maybe... gag him with a bath-towel.

And... and maybe, maybe Zero looked... okay trussed up like that, and maybe the little curious-mischievous-rebellious look in his blue eyes was... really... nice, but... but that wasn't the point. And okay maybe X kissed the little bit of lip the towel wasn't hiding, and maybe he might have maybe bitten it a little, but that was... payback... for the math thing. Yeah. Payback.

And then Blues wandered down the hall, and happened to look in, and what the hell was he even doing here wasn't he supposed to be... somewhere else, and-

"It-it makes sense in-I can explain," X squeaked, dropping his pencil.

Blues snorted, doing that pretending-to-try-not-to-smile thing that he always did when he had fresh teasing fuel. "Please don't," he said dryly, and shut the door.