A Mexican guy, an Italian guy, and an American guy are all working on a roof... and they're all getting tired of their lunches... So one day the Mexican guy opens his lunch and he goes ""man, if I get a taco one more time I'm going to jump off this building."" The Italian guy opens his box and says ""Goddammit, if I get spaghetti one more time I'm going to jump off this building,"" and the American guy says the same thing about his peanut butter and jelly sandwich. The next day, they all get the same thing for lunch and they all jump off the building and die. When the police are interviewing their wives, the Mexican woman and the Italian woman both agonize saying they would've packed something else if they'd known. When the turn the American guy's wife, she shrugs and goes ""he packs his own lunch.""