Short for cuckold
A person (usually a man) who lets others (usually women) metaphorically walk all over them in the name of "being a better person", or as a fetish.
- This guy lets misandrists shackle him with a collar like a dog because he believes that masculinity is toxic
- Wow, what a cuck
Letting your girlfriend cheat on you and getting back together with them claiming they're "different this time".
Person 1: Dude, I can't believe Dylan is back together with Alexus.
Person 2: I know, she just cheated on him and now he's letting her cuck him again.
Person 1: Unbelievable.
When you watch your husband/wife getting intimate with another person while you are in the corner playing with yourself.
My wife cucked me hard last night.