The sensation experienced upon completing an achievement that's only notable to a nerd or geek.

When something nerdy is pleasing almost to the point of sexuality, especially among nerds.

Elon Musk appearing on Rick & Morty.

when someone has experienced too much nerdiness at one time, they are said to have a nerdgasm, where the said person blurts out random nerdy things.

An explosive, often verbal, sensation caused by a mind-blowing occurrence relating to nerdy material. A strong enough nerdgasm can lead to violent spasms similar to those of a seizure.

An overexposure to an electronic item worthy of awe, or jumble of code-scripting and multimedia representing in a fucking awesome playable interface (aka a fucking awesome video game). One in this overexposure usually Splurges uncontrolably over anything within a 10-20 foot radius(occassionally blue???). A state of shock arrests the splurger's abuility to do anything from anywhere between 5 minutes to three months. If one tries to avoid a nerdgasm they are a n00b and should be pwned imediately by someone totally 1337.

Nerdgasm: (noun) \ˈnərd,ga-zəm\ A beautiful moment where fandom meets extreme euphoric pleasure.