Rust Stain 

A brown trail that leads typically from the anus to the knee along the inner leg brought on my loss of bowel control. Usually this occurs in the older population (70+).

Dude, my grandpa needs to quit wearing shorts, his rust stain left a mark on the couch again.

Rust Stain by Zaterion December 15, 2005

rust belt 

Leftover streak stains of fecal and/or menstral matter after intercourse in the backseat of a car.

Man, I totally got a wicked rust belt last night after banging that chick at that party!

rust belt by Capital_T December 27, 2010

Rust Pilot 

An term that describes a car enthusiast who believes that performance trumps appearance when it comes to classic cars. Many rust pilots are veterans of the car show hobby that have tired of the over done perfection of trailer queens,class winners and 100 point restorations.They have decided to drive what they love. Reliable performance and drivability are key factors in determining what a rust pilot drives. Appearance is a distant second and may include exterior finishes in primer,worn original paint or non restored rust.

A rust pilot can find his ride in a barn, a backyard or a scrap yard and leave the exterior as found

Rust Pilot by ovalman February 26, 2009

rust-picker 

A derogatory term for members of the US Navy. Rarely an endearment.

"Hey, watch your six, rust-picker! I'm comin' in right on your tail!" (A Marine pilot taunting a Navy pilot during war games)

rust-picker by Athene Airheart March 14, 2004

Rust & Dust 

Term used at auto dealerships to describe supplemental "paint protection" and rustproofing that is sold during the part of the sale where the financing is arranged. It is a source of "back end" profit for the dealer.

"That customer was a total lay-down; he bought Slip & Trip (disability insurance), Choke & Croak (life insurance) and Rust & Dust"

Rust & Dust by St. Jerome December 18, 2008

Rust Mortgage 

A "classic" car, motorbike, or boat that old farts purchase from one another under the auspices of fixing up and restoring, but is invariably neglected, and allowed to continue to deteriorate upon their own driveway or lot.

AKA junker Fixer Upper project car

"You heard Tim took over a Rust Mortgage? That thing's gonna sit in the grass until it turns to dust."

Rust Mortgage by PanfrySamurai September 4, 2018

Rust player 

A player who shits their pants and lives in their parents basement

"Oh yeah im a rust player"
"Oh so you shit your pants and live in your parents basement?"

Rust player by Yourfavoritedumbass__ May 4, 2022