Something that is "fungusting" can be defined as something disgustingly fun, such as the following: Mud-wrestling, egging, digging up a hole to bury a body.
I was stabbing fungus to death earlier, it was pretty fungusting...Hail Satan
The act of taking someone else's computer or other device and looking up something sketchy or humorous, and accusing the person of doing it themselves. Particularly used for the word "Fungus" and the website puginarug.com.