Something poorly made so it breaks easily, a person with absolutely no strength or courage, or a beverage lacking in flavour.
1.Don't buy those one-dollar screwdrivers again, they are piss weak and bend like nobody's business.
2.I was going to go around to Headly's house and kick his ass but the guy is so piss weak he'll probaby shit his pants and then there's no way I'm touching him.
3.This beer is like fizzy water, piss weak in fact.
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.