Top Definition
A man who suffers from premature ejaculation.
Nice guy but the sex was crap, he was a rusty zipper.
by Sarah Monaghan August 31, 2006
When a mans penis is so small, He pees on his zipper causing it to rust.
Kyle's penis is so small he gets a rusty zipper every week.
by bigCincincy November 15, 2015
When a man's butt hairs dread together from not showering.
"I've been on this greyhound bus for four days, haven't changed my underwear, eating nothing but Mexican food. I have a wretched rusty zipper "
by Nastycar August 19, 2015

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