The region of hair that can be found on the male's lower region, specifically on the tate, a.k.a the gooch, b.k.a the grundle. Also, "The Fike is the mowhawk of hair between your balls and your asshole!!!" -Judd Johnston 2001
"Holy shit, this humidity is making my fike clump together and it's rubbing up against my undergarments, thus creating superfluous friction in my pants and extreme discomfort."
"I need a fike trim"
"I'm getting my fike braided into corn rows"