Here's a great reason not to take one of those horrible quizzes in "Cosmopolitan". 

--Sunday in Mesa, Arizona, 22-year-old Noelle Clough and her husband were doing a quiz in "Cosmo" about their EXES.  That's a pretty volatile thing to take a quiz on . . . and it exploded.

--It's not clear what exactly they were saying that made each other angry . . . although we can guess one or both of them made it clear they still had some feelings and/or SEXUAL DESIRES for their exes.  But things got UGLY.

--Eventually, Noelle's husband threw two kitchen knives across the floor and told her to STAB HIM.  And she DID . . . she stabbed him in the back with a four-inch paring knife.

--The cops say they'd been drinking.  The husband was not seriously injured from the stabbing . . . Noelle was arrested on suspicion of aggravated assault with a deadly weapon.

(AZ Family)