Irish for ejaculating your "load", which contains semen and sperm, all over a sluts face, and hopefully she will have the common decency to fuck off afterwards.
A common practice in Ireland usually without the slut fucking off as they want more muck.
" jasus would ya look at that whooer!" said a Fat ugly Irish man
" She deserves the muck" said his even fatter girlfriend "BLow the Muck on her face" said the fat ugly Irish man with a grin on his face
" No thats my dinner" said the irish model (Fat woman)
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.