To wash, clean, tidy and if necessary, shave and trim, one’s genitals, taint or asshole. All three if circumstances warrant.
The prostitute dashed into the Wawa bathroom to do an undercarriage makeover after her last John filled her like a Boston cream donut.
The humidity was so swamp ass inducing that I had to freshen with an undercarriage makeover.
I gave myself and entire undercarriage makeover before my Grindr hook up arrived.
I looked like Chewbacca’s face down there so I cleaned up with an undercarriage makeover.