The intimate act of fluttering ones eye lashes in and around someone else’s butthole so that the eyelashes intertwine and mingle with the hairs on and surrounding your partners butthole.
Geraldine squirmed with delight as Buck’s strong eye lashes intertwined with her rim fur for the best butterfly butthole kiss she had ever experienced.
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.