adj. An abbreviation of the phrase "too gay to function". Used in some social circles to certify a person or object's fabulousness/homosexuality. (example 1) It can also be used in a negative connotation, but adds style to an insult. (example 2)
example1: "Oh em gee! We are so 2G2F"
example 2: "What was with that math test? It was 2G2F!"
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.