In the world of Adult, performer Desiree Deluca is known as Boobzilla--she's a hot, red-headed MILF with 34F natural boobs. She's definitely earned the title and has been recently been dubbed a legend by Hot Movies for Her based on her amazing mammaries.
Damn, look at that girl, Desiree Deluca. She's got amazingtits--and they're HUGE. Her boobs dwarf everything in their presence. They're like Godzilla, but they're boobs (AKA Boobzilla).
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.