Made while having sex outside in the winter, whorefrost is the deposit of cum on objects exposed to a cumshot, such as grass blades, tree branches, or leaves. It is formed by direct condensation of semen and water vapour to ice at temperatures below freezing and occurs when cum is brought to its frost point by cooling.
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.