The noise made when lightning strikes someone named Wilson.
The Wilson brothers say “wow” a lot, and they also say “Wilson” a lot, since their last names are Wilson. Lightning makes the noise “kachow”, and Owen Wilson says “kachow” when he turns into a racecar, Lightning McQueen. The existence of “Wow” and “Wilson”, indicates the existence of “Kachow” and “Kachilson”.
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.