When a male farts with his legs closed and the warm air escapes forward and slides past his nuts, sliding the testicle to the side and out into the open.
Unknown to my wife I just let a nutslider go. Man does it feel weird at the end when it pops out.
This describes a man who likes wearing women's underwear, namely thongs. The fabric splits the nuts, each testicle hanging down the sides of the thong.
That man sure has a hellva nutsplitter! That pair of panties is probably choking his balls with that nutsplitter.