A mobeast is a gourmet pig. A 'foodie' or culinary expert who appreciates the best quality food and wine and indulges themselves in way too much of it. They are experts who are good at what they do, want the best of the best and make a beast of themselves having mo (more) of it than they should. Think fat chefs like Nigella Lawson.
Let's go down to the deli and buy a heap of nice food and a bottle of Borolo to have a mobeast lunch.
I've eaten so many truffles I'm turning into a mobeast.
You're eating out at restaurants every night? What are you now, a mobeast?
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.