A person who clings hard in denial of a con after they’ve been exposed.
Months after Hilaria Baldwin was exposed for her "decade long grift where she impersonates a Spanish person," she still insists she is Spanish because she's culturally fluid. She is a gripter.
A parent or gardian who continues to express interest in pop culture, music, and/or fashion. Parents who refuse to grow-up just because they now have a child.