A fork of Rural Dictionary
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.
The act of peeing into someones butt
Would you like to have a rusty butt chug later?
When you put it in someone's butthole and pullout and they proceed to do a line of cocaine off of your shit covered dick
Guy: hey I heard you hooked up with Katie d Me: yeah we did a rusty coke butt