Who Cares: (Expression) A response to something of no concern or interest whatsoever.

Jay-Z and Beyoncé, who have always been super secretive about their relationship, have reportedly obtained a marriage license which is good for 60 days.

Whatever. Jay-Z and Beyoncé are pretty much the most boring couple ever, and almost nothing they do could possibly make me give a crap about them. I think they're even more boring than my parents, whose hobbies include "going to Outback" and "talking about going to Outback." What? So they really, really like Bloomin' Onions, okay?

Jay-Z and Bey-oring-cé at the opening of the 40-40 Club late last year: