"Cunt Puncher" is basically a slang term for FISTING. A "CUNT PUNCHER" is the dominant party who does the actual "cunt punching"(fisting). Fisting is when you literally fit your fist into someone's vag or ass and use it for penetration. In this particular forinstance, this act can apply to straight, lesbian, or trans sex.
Example 1:
Jodi loved to fist girls all the time at her boarding school. That's why when she turned 18 she had "CUNT PUNCHER" tattooed on her arm!
Example 2:
Jason came twice before he decided to use his hands on Laura. She was so open he could fit his entire hand up her pussy. Laura clamped down hard around his wrist. He never knew that cunt punching could be so enjoyable!
When the liquid that comes from inside a vagina dries up and begins to flake off. It is often found on a man's penis after he has had his way with a lady.
Jimmy: Wet as fuck, see for your self brah. *pulls down pants*
Jeremiah: Yo shit bro, that's a lot of cunt rust on your cock!
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As I fired my stream of piss into the toilet I looked down at my dick. To my surprise there was still cunt rust left over from last night's sexual shenanigans.