Spriends is the plural of spriend, which is a person with whom you do sports, share your sport experiences, visions and goals. Spriends are different from regular friends as the topic of communication between the two people is restricted to or dominated by sports.
Spriends are people with whom you do sports. A spriend is someone with whom you can talk for hours on end about your sport, your experiences and your goals. Spriends are hard to reach and chat to on facebook or any public platform where they are mixed with your friends who usually couldn't care less about your MTB whipe-out or your new climbing rope.
Sister's friend - the relationship between your sister's close friend and yourself. Usually used when you have a close bond with you sisters friend as well - but not quite a friendship.
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.