centre parting
A girl who's pubic bush is so big due to a lack of grooming, that you can create a centre parting through it. Aka curtains.
"Harvey you seen that girl she hasnt trimmed her hair down below in over six months"
"You mean before you go down you get your comb out and do a centre parting?"
"You mean before you go down you get your comb out and do a centre parting?"