saying something that you don't whole-heartedly belive in or mean. Similar to "tarofe" used in farsi, infignacious describes when someone says one thing, but they mean another. This condition may describe a situation where someone is too shy, or trying to be very polite about an offer given.
Nima is an infignacious young man, he was offered a plate of khoresht, but said "no thank you, i'm not very hungry" even though he hadn't ate in hours! What a polite gentleman. *wink wink*
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.