"GUTS" is arriving home late after a night out with the guys, being assaulted by your wife with a broom, and having the guts to say, "are you still cleaning or are you flying somewhere?"

"BALLS" is coming home late after a night out with the guys smelling of perfume and beer, lipstick on your collar, slapping your wife square on the ass and having the balls to say, "You're next fatty!"