Perineum is the area between the anus and the genitalia, in the case of gooch, the latter is male, since gooch is predominantly used for men.
Fun fact: in Laguna Beach slang gooch actually means superb, awesome or excellent.
Origin of the term
The exact origin of the term in this use is quite unclear, the first trace of it on the internet being the Urban Dictionary definition that was uploaded in 2002.
Not long after this, people on Usernet were already referring to the perineum as gooch, in conversations about shaving.
A possible origin of the word could be the fact, that it is resembling the slang term for vagina; cooch.
Spread of the term
Gooch is actually a term, that is all around us.
Of course, in the era of the internet and social media, it is these sites, that are predominantly featuring the word gooch, through the grand multitude of posts in all varieties.
- Urban Dictionary – Gooch