Someone who takes a particular interest in acts that are embarrassing or awkward that make one feel extremely ashamed and/or embarrassed.
Jack: "Wow your performance at stand up comedy was so cringe I was so embarrassed for you! I can't believe you won at Jackbox party!"
Anna: "Thanks, I'm a cringe enthusiast!"
When one does something cringy while talking to someone, realizes that it was cringy and starts doing something even more cringy in order to cover up their previous action.
This can repeat endlessly or until the other person just leaves.
Monica had a cringe binge at my mother's funeral. She was making a speech and said a bad joke. Nobody laughed so she just kept making more jokes, each worse than the last one.
Then everybody left.