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Rusty weapon – verb – rusty weapon is the act of using your saliva to lubricate your penis prior to intercourse when you have a big dip in your mouth.
"Kodiak is the best dip to use if you really need to slide in the backdoor for the first time."

"You know your a redneck if... giving your wife a rusty weapon is considered foreplay."
by Jell0saq January 28, 2013
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