Black Flash

Term coming in its definition from the slang of the anime and manga series "Jujutsu Kaisen", written by the author Gege Akutami, is a phenomenon that occurs when cursed energy is applied 0.000001 seconds before a physical hit, in order to put it into perspective, a "Black Flash" can result in being thought of as a kind of "critical hit"

According to this sense, it could be perceived as something as "When you do anything that is recognized as remotely rare on its probably to occur and also during a considerated short period of time", while being said in reference to the original term.

An example from it could be something in the lines of:

"X" Person: "Hey yoo man, me and my homie just hit the sickest and cleanest dab me up from all time!"
"Z" Person: "Really? in that case I do believe that you and your friend just did the equivalent of hitting a Black Flash in real life"