Razor Girl by Carl Hiaasen 

She likes to rear-end cars for hire and when the angry driver comes back to yell at her they are confronted with seeing her, skirt hiked-up, panties around her ankles and a razor in her hand, apologizing for shaving while driving on her way to a hot date.  She asks for a ride, then gets the driver to pull over in an out-of-the-way location.  This allows whoever hired her to grab the guy for whatever purpose they had in mind; extorsion, punishment, etc.  Then there’s Yancy, an ex-detective on Key West, trying to get his badge back, working as a health inspector, who’s girlfriend, a medical examiner in Miami is tired of the daily dead and goes to Norway.  Somehow, Yancy and the Razor Girl, Merry Mansfield, so she says, end up together.  Meanwhile there is a duck-dynasty look-alike show, whose main character is booked for a stand-up at a bar on Duval Street.  Merry rear-ended the wrong guy, the actor’s agent, and without proper coaching, the actor tells inappropriate jokes for the area.  He is chased out, only one of his chasers is his biggest fan, ala Misery.  And it gets funnier from there.