1 definition by drankinzailor

1. The act of intercourse while a woman is on her period.

2. Fuckin' while she's on her period.

This is an old Sailor's phrase. It comes from the rusty-red color of period blood. And the slang term "screw" commonly used to refer to intercourse. It should also be noted that human blood contains iron, and its red color is due to an oxidation (or rusting) reaction.
Me and my boo had a rusty screw on the kitchen floor. It got real rusty.
by drankinzailor January 6, 2019
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