An x-rated photograph of ones self. Not limited too but generally is of the male or female genitalia; Sometimes, can be found in the same xelfie. Can be full potrait, half portrait, for those that wish to leave something to the imagination. Or may be a full on anatomy and physiology lesson.
Generally shared between young adults, and sometimes by older creeper politicians to under age girls. Usually signed with a moniker...
I opened a text from a friend of mine and he sent me a xelfie of his package. It looked like it was extremely cold where he was... When I responded LOL, he said he's a grower not a shower...
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.