Dirty Little Matt is sitting in the back of the math class... Dirty Little Matt is sitting in the back of math class, obviously not paying any attention, when the teacher calls his name. ""Yeah teach?"" he replies. ""If there are three ducks on a fence and you shoot one of them with a shotgun, how many are left?"" asks the teacher. Matt answers ""Well, teach, if I shoot one of them with a shotgun, the loud noise is gonna make them all fly off."" ""No, Matt, there will be two left if you shoot on…