Judging by the number of comment it's gotten I'm guessing pretty much everyone in the fandom has already read this but I can't NOT rec it.
Your Brains Are No Match For My Tractorbeam by
chash (aka
with_a_kay) Jensen/Jared AU. Approx. 17.000 words
Based on Big Bang Theory which I have never seen and really, it didn't matter at all. Supernerds and geekiness and so beyond hilarious I really can't describe it. Apart from the boys there is a hilarious Chad and a Gabe to die for. I swear, every time he opened his mouth I burst out laughing.
To give you a taste:
Jensen came out to his parents during college with a lecture and a slideshow. He remembers his entire speech, which covered the problems with reproduction in an already overpopulated world and the benefits of an openly homosexual Nobel Prize winner for the gay community, and had ended with: "In conclusion, I think I'm gay."
"Honey, do you like men?" his mother asked gently.
"As much as I like anyone," Jensen said.
"Well, what makes you think you're gay?"
"I'm in college," said Jensen. "It's normal to discover your sexual preferences during college."
"You're eleven," said his mother.
"I don't know what that has to do with anything."
And his mother had said she supported him whatever he wanted to do, but she thought Jensen should really give it some more thought. At eighteen, he'd conducted an experiment that involved sleeping with two women and two men (the experiment had taken about six months, all told, because finding four people to sleep with him proved difficult) and concluded that while he had nothing against women, he preferred men, but could probably go without either without much trouble. And for the most part, he does--it's more trouble than it's worth, getting people to have sex with him. Especially given that, with precise calculations of pressure and angle, Jensen has found the most scientifically optimal ways to get himself off, and no one else is ever willing to take the time to learn them.
Seriously, you gotta read this if you haven't already. Best thing since Star Trek.