"yntmo" is an acronym for, "You need to move on." It is something you tell someone when they are trying to get past a difficult part of their life, like the loss of a loved one or pet. It could be something tragic that has happened in their life and they just can't seem to shake the negative feelings of it.
But you need to - to get on with your life: accept the past, deal with the present, and prepare for the future.
"Cassie, why didn't you go to Steve's party last night ? It was awesome !"
"I'm sorry, I just - I can't - I'm still pretty broken up about Marmalade."
"Your cat ? Listen, that wasn't your fault. Not in the least. YNTMO, you know ?
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.