Aside from its conventional meaning (look it up) can be used as a substitute for 'cool' or 'worthy' in the company of fringe metalheads and acolytes of the Necrowizard.
(Greek):
1.pertaining to the underworld 2.dwelling underground 3.rising up (out of the ground)(B.M.)
Orpheus, a musician who went to Hades (the subterranean land of the dead in Greek myth) to ask for his lover's return to the world of the living, played music for his chthonic audience so beautifully that they relented to his request and let him try to take her back up to the surface.
A black metal/folk metal band from Taiwan, they have been around since 1995, and have made 5 studio albums, and are scheduling their newest album for june of 2011. Their lyrics focus mainly on the subjects of Chinese mythology, Taoism, and political stuff.
Their band name is pronounced Thonic, not Kthonic, Chuhthonic, or anything else.
Metalhead1: "hey, have you heard of that black metal band from china? I forgot their name, but they're pretty good"
Metalhead2:"yea, dude you must be talking about Chthonic! you have good taste :P"
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.