Top Definition
1. (Verb) The act of having anal sex with a woman with gastrointesional issues.

2. (Adjective) One who acts like a fuck or fucker, but to a greater extent. Synonymous with assanine
1.

Girl: Golly gee willikers! I've been constipated for a week now.
Guy: I can take care of that if you let me rusty fuck you tonight.

2.

Guy playing Cod Mod 2: That rusty fuck will not stop running around with his stupid akimbo shotguns.
by nakker December 14, 2009

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