Pulling your cock in a furious manner while locked in your bedroom after telling your parents that you have gone upstairs to 'watch Star Trek'!
"I am just off to bed mum as Star Trek is coming on and you want to watch Grey's Anatomy. Tonight it is my favourite episode when the Star Ship Enterprise is Taking Captain Pickard to Warp Speed 5!"
"It's alright son, you can just say your having a wank!"
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.