Is a dirty dildo with shit on it or a dildo that is only used only for anal purposes.
"Hey can I borrow one of your dildos?"
"Sure. But don't grab that one. It's my rusty dildo."
Taking a fat dump right before you take a dick up the ass.
Larry told me tonight he wants to try anal , so I had to squeeze in a rusty cleveland before he got here.
When you're taking a shit and a menstruating woman mounts and rides your face.
Greg wanted a blumpkin but his chick decided she would give him a rusty Badger.
When a woman is on her period and you go down on her butt hole and she poops in your mouth so you spit in into her vagina.
she was on her period so i went down on the dirt road and she farted and pooped in my mouth so i got mad and spit it into her vagina. thus the Rusty Lunchbox.
From the Adult Swim comedy "The Venture Brothers", it's when a guy jerks off so much his dick gets all red and sore.
Hooker: "I'm gonna give you a rusty venture"
Brock Sampson: "Don't believe the hype honey, a rusty venture is when you jerk off so much your dick gets all red and sore."
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The act of whacking someone in the eye with your penis after anally fornicating then kick them in the shin so they hobble around and squint like a pirate.
Dick gave Jane a Rusty Pirate after she told him how much she enjoyed Johnny Depp in Pirates of the Caribbean.
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