Top Definition
An extremely small or extremely large penis found on a nerdy, dorky person.

A Geekis can only be found on a nerd or dork or geek that has no life and spends 24/7 playing World of Warcraft or something along those lines.
When Clark got his pants ripped off, I could not believe the size of his penis. It was a Geekis!
by Ruddz March 15, 2010

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