a struggle cuddle is a episode that takes place during sleep where one partner wakes up and realises the other person is not directly touching them. The struggle begins to pull the partners into their arms and invariable involves the partner being pulled waking up momentarily as they are dragged across the bed in an affectionate manner.
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.