The process of modifying things to find out what they do without fully understanding the consequences of such actions. Driven by a strong sense of curiosity without a strong knowledge base. Usually performed by the most unqualified people in production environments. It can be as simple as flicking a switch, or performing computer modifications. Consequences are usually significant, such as lost revenue, or even the loss of life.
Richard to himself: "Gee... I wonder what this does.", while changing the port of a website.
Frank: Do you know why the site is down?
Tom: It looks like Richard was Gee Finger Poking in IIS again.
A synonym for anus, derived from the practice of inserting the middle finger into one's own anus during masturbation or into the anus of one's partner during copulation.
When one of your co-workers at your firm takes the communal Boston Globe newspaper from the firm's library with him to the mens room, then proceeds to take a massive, stench-ridden, vomit-inducing dump, and exits the stall with the Globe under his arm and fails to wash his poo-ridden hands.
Dude, do not touch the Globe in the library today. Sid fecal fingered it. He read it while shitting and then never washed his hands after wiping his massive ass.