Sam/Dean. | incest. watersports. piss-drinking/tasting. underage kissing . mention of Sam/Jess, Sam/Madison [het porn/fem ejac]. | NC-17 | 21,000 words. | betaed by abx_journal—thank you so much, honey! | an idea herein was blatantly stolen from wildxisxturning [but I was given permission]. Lovely [and speedy!] art done by musingdarkly | Sam Winchester's journey of self-exploration, a coming-of-age tale that combines looks at his childhood with his burgeoning crush on his older brother and his ever-increasing penchant for watersports.
Or you can read the entire story in one post On Dreamwidth. Or you can read (and download!) on AO3