It is a form of autism like Asperger's disorder.
In this case, "privilege" is defined as a set of advantages given to groups considered the majority within society. (In the US, some examples are white privilege, male privilege, straight privilege, cisgender privilege, able-bodied privilege, and neurotypical privilege.) Someone who denies privilege usually fails to understand it, feels guilt or anger towards its existence, thinks that it refutes their accomplishments, or blames its existence on the unprivileged group.
Wife: Can't you just hold it in, for God's sake? (John: "THAT'S WHAT SHE SAID!!") Meet me at the car. Don't fall in.