Jack Moran
I can't believe he only wrote about 4-5 films, all of which were for Russ Meyer. The screenplay for FPKK is full of classic quotes. Some of the coolest dialogue ever written for the screen. A damn shame he didn't put out more work.
"Easy, baby. You're almost a fire hazard."
"I've come up hard, baby, but now I'm cool."
-Marvin Gaye