1 definition by bp yo

A "pinch-hit" is when you are sneaking out to fuck some skank and ask a buddy to sneak in and be there with your girlfriend/wife in case she wakes up, so that she won't wonder where you are.

A "Rusty Staub" is when its a buddy who hasn't had sex in a while, and he ends up waking her up and fucking her brains out.

Often she'll end up leaving you for him.
"She's she's leaving me bro! Why did you have to go and rusty staub her like that asshole!?"
by bp yo March 29, 2010
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