I thought for sure I was going to hear an f-bomb

The girls and I put on our pajamas the other night, then hopped in the van and drove around looking at Christmas lights. At one point, Ree kept trying to say something and Ro kept interrupting and trying to tell her what she should say or how she should say it. I told Ro to please let Ree finish her sentence, that she could say whatever she liked, and that in general you couldn't really tell people what to say. Well this touched off a vehement round of whispers in the back seat. Finally the whisperers reached agreement, and Ree solemnly said "Uh huh, mama, you can tell people not to say bad words." I smirked a little and asked if they knew any bad words. "Yes mama" came the rapid answer. Oh my. "Well, um, what bad words do you know?" I asked, kind of expecting a few errors in judgement to be tossed back in my face. More whispering. Then "We can't say bad words or we get in trouble." Heh. Still keeping a straight face, I said "It's ok, you're allowed to say a bad word just this once so I know what it is, I promise you won't get in trouble." And that's when I heard the Really Bad Word... Both girls lowered their voices and whispered dramatically "Okay ........ the bad word is ............... macaroni poopoo!" (gasp!)