rusty snake 

When shit dries and crusts to your penis.

Man I fell asleep after hitting the back door. Now I have a rusty snake.

rusty snake by Rusty snake October 10, 2020

rusty protein shake 

When performing anal sex. the woman starts to turtle head as the man busts a load simultaniously. while this is happening the man grasps the womans hips and shakes her vigerously. thus a rusty protein shake.

I have to wash my bad sheets. my girl spilled my rusty protein shake all over it.

rusty protein shake by true imagination June 5, 2009

Shake Rust 

A phrase meant to say one is going to drive somewhere.
Derived from the fact many older vehicles will shake off rust when driven.

"Ah, I lost track of time, gotta shake rust."
"I'm gonna shake rust off to the store."

Shake Rust by Dyne Willow Work February 2, 2021