rusty undercarriage 

Someone who doesn't like to wipe after a fat shit.

"I heard he has a rusty undercarriage."

rusty undercarriage by Onethatpeoplehaventusedyet August 3, 2014

undercarriage 

The area between your legs. Your crotch.

Damn Betty, go shower, you've got one janky undercarriage.

undercarriage by T dawg March 23, 2005

Undercarriage Polish 

The act of licking/sucking the gooch.An act typically completed during a Blow Job.

Damn! That ho worked hard, she even gave me an Undercarriage Polish

Undercarriage Polish by Mr.Chin May 18, 2011

undercattage

The underside of a cat.

When Fluffy sat on the glass shelf, you could see her whole undercattage.

undercattage by Wolfy PDX July 12, 2011

Undercarriage Marauder 

A testament to ones cunnilingus skills. A shashbuckler of a females nether regions. A pirate of poonani...

Broads be calling us the Sailors of the South Mouth, a regular Brigadier General of the clit ...shit them hoes over there know me as Capt VanGyner the saltiest of all them Undercarriage Marauders.

Undercarriage Marauder by Frydae November 22, 2011

Undercarriage Makeover 

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.

Undercarriage Makeover by Dick Onchin November 14, 2020

The undercarriage of the human spider 

The view as if you were laying on the floor staring up at 2 men sharing a dildo.

I googled Soos and Grunkle Stan porn the other night and saw the undercarriage of the human spider.

The undercarriage of the human spider by JakeTheSnake6102 February 16, 2021