Rusty curtains 

Coined by the dyke punk band Rusty Curtains. Used to describe the following types of Vaginas:

1. Blood covered/coated. Usually because of menstruation.

2. A vagina that has not seen play in a while.

3. An old scary vagina, that you fear may give you tetanus.

Example for all 3 definitions:

She had rusty curtains. I fucked her anyway.

Rusty curtains by Majestic Majesty January 19, 2014

Rusty Curtain Hook 

During felatio, the felatee reaches across the back of the felator, inserts their middle finger into the felator’s anus and lifts them up, thereby suspending them in mid-air like a curtain hanging from a hook.

She was merrily giving me a blow job when I surprised her by reaching over and giving her a rusty curtain hook.

Rusty Curtain Hook by Russ T Curtainhook January 26, 2020