Flicker Gooning is an extremely difficult variation of gooning where a gooner brings themselves to "point of no return" before letting go of their penis with and holding back the ensuing explosion by flexing the same muscle that allows you to make your penis "jump." It is extremely hard to keep a consistent contraction in this muscle, so a "flickering" technique of repeatedly stimulating the muscle is often employed.
An advanced method of gooning, typically harder for the pros. (The main point of gooning is to edge for hours.) Flicker gooning typically is a risky methods for pros because they could finish before the minimum time requirement.