Old enough for cursing

Two brothers, ages 6 and 8, decide they are old enough to start cursing. So
they plan to use dirty words the next morning at breakfast. The 8-year-old
says he'll use the world HELL and tells the 6-year-old to use ASS.
Well, the next morning they head downstairs for breakfast. And when their
mother asks them what they want, the 8-year-old says, "Ah, Hell, I'll have
some Fruit Loops."
Shocked, the mother wheels around and backhands him on his
chair, sending him screaming back upstairs. She then turns to the 6-year-old
and says, "What are you going to have?" He replies, "I don't know, but
you can bet your ass it ain't gonna be Fruit Loops."