batshit narcissist
A form of narcissism whereas the person not only has an inflated sense of self-importance, but also have lost all connection to reality and facts. A batshit narcissist will conflate their negative or losing position with victory and supreme dominance, while simultaneously blaming anyone with facts or truth of deception and lies. See also Donald J. Trump
After the losing 2020 Presidential election, Donald Trump melted down and became the epitome of a batshit narcissist.