with the exception of a few tiny bumps and ridges, the terrain of my dmz is fairly smooth and blemish-free
a euphemism for the area of skin located between the anus and scrotum, also known as the taint, gooch, grundel or chode
"with the exception of a few tiny bumps and ridges, the terrain of my dmz is fairly smooth and blemish-free" What is the definition of "dmz"?