And yes, that also includes how to have sex. Given that nerds love to read or watch television, it's not really surprising that they know a lot of stuff about how the world works. They would really love to be able to explore their sexuality with another guy as well. And not just random pushing, poking, or slapping like how they usually get touched by non-nerdy guys. But that's where you're wrong! Even if these nerds usually talk about gadgets, books, television shows, or games, deep inside, they would really want to feel the warmth of another man's touch. It's understandable that you would really have a hard time seeing yourself having a romantic relationship with one of these nerdy guys, much less be physically attracted to them. The stereotypical nerdy guy wears big, thick glasses has freckles on his face, has braces that never seem to improve the alignment of his teeth even though he has had it for a few years now, a small body frame that would seem like he would easily fly away when there's a strong gust of wind, and talks almost silently unless he's spewing things about what he's geeking out about at the moment.
Nerds, geeks, bookworms, whatever you want to call them.