rusty buttcheeks
1. RustyBUTT-cheeks is when you still got poop in between your cheeks.

2. My version of rusty butt cheeks would be butt cheeks that are unused for a long time, but at one time was used lots = RustyBUTT-cheeks

3. What you call anal sex without Lube dry anal sex= RustyBUTT-cheeks
I'm going to make those rusty buttcheeks work again.

When I was walking down the road I felt something itchy, later in the bathroom when I wiped, I had rusty buttcheeks.

Babe get out your Lube, you got rusty buttcheeks