Specific K/S watersports fic

[kalimyre.livejournal.com]

Yeah, it's my kink. So I remember this specific story where Spock wanted Kirk to wait through his whole shift without using the bathroom. They had to work up to it, and there were pants involved with handy futuristic absorbent material. So basically Kirk didn't make it quite a few times, but nobody knew, due to the special pants.

Then he finally did make it all the way through, and Spock decided it was time to try with regular uniform pants. So if he lost it, everyone would know. I will leave it a mystery as to whether he makes it, but rest assured, it is followed by a scorchingly hot sex scene.

Anyone know this one? I'd love to read it again. Thanks!