This is a popular phrase used by those who speak ebonics (negroes). It is equivalent to "I am going to get" used by those speaking dialects other than ebonics.
Someone who uses an "imagine" insult more than once during an argument to strawman another person.
In a sentence:
You're a fucking imagitard. You can't even think of a creative or original thought you absolute bafoon.
Gamer 1: Imagine losing.
Gamer 2: I went top of the leaderboard and you got carried you brainlett.
Gamer 1: Imagine losing at the top of the leaderboard.
Gamer 2: No one likes you.
Gamer 1: Imagine being named justslappedyourmom69
justslappedyourmom69: You're an imagitard.
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.