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butt rust 

The dry rusty colored shit around your asshole when you dont wipe well enough...it really burns and its hurts making it hard to move...it also hurts extremely bad when you take a dump if you already have it...the best way to get rid of it is with some wet TP or paper towels
Dude...i can't move...my butt rust hurts...ahhh it burns
butt rust by butt sex December 15, 2008
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butt rust 

It's when you don't wipe your bum good enough after taking a poop. Your bum can get poo crusties and make your asshole itch.
I've got a bad case of butt rust this morning after all that drinking and pooping I did last night. Poop.
butt rust by MrRoche May 19, 2005

butt rust 

The off-brown discoloration inside the undershorts. Butt rust, also known as "skid mark" is usually the result of high pressure farting and / or lack of sufficient wiping of the anus.
"Damn, Frank sure has butt rust on his undies here."
butt rust by Frank Klaune March 5, 2004

butt rust 

is when one neglects to clean or wipe properly betwixt their glute cheeks and a flaky orange/brown build up of poop deposit happens. Butt rust has been known to emit a foul odor of human fecal matter and cause extreme and even painful discomfort when walking, running and especially biking. Butt rust is not only a human malady but is most common in and among other bipedal or quadrupedal mammals whose legs come together near the exterior of the anus to form a crevice or fissure of the body perfect for the formation of said ailment. Butt dust can often be embarrassing as it can appear in your undergarments as skid marks, it can leave behind butt dust (see butt dust definition), or it can cause grief and later chafing when one is expecting to expect butt sex. The only sure fire ways to rid oneself of butt rust is to clean between the buttocks thoroughly and regularly and to perform extra in depth wipes after leaving a deposit in the porcelain pot.
"After not bathing for a few days I was washing my tush in the shower when I noticed the water turned an orange/brown color which must have been from my butt rust."

"I was going down on Tammy the other day when I accidentally licked her anus and she had butt rust there!!"

"I didn't know what to expect when having butt sex but I knew I needed to take care of my butt rust before the main event."
butt rust by butt_bot September 13, 2011

butt rustler 

a term used to describe the act on anal sex
" chunks is a butt rustler "

" did you hear?, chunks was but rustling all night "
butt rustler by cuntman3000 November 18, 2011

Rusty Butt 

When a person does not wipe there ass well after taking a shit. This either results in a rash or you will end itching you ass crack for hours.
friend: Why you wigglin on the couch?
you: Man Ive got some crazy rusty butt.
Rusty Butt by Bro000 March 6, 2009

Rusty Butt Chug 

The act of peeing into someones butt
Would you like to have a rusty butt chug later?
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