Chloe the potty mouth

So our little angel chloe was so mad at me this morning and I just did not take her as seriously as she wanted to be taken and so she said to me "Mom if you dont let me go outside I am going to say the f-word!" not thinking she knows what the f-word is I said whats the f-word chloe? is it, flip, fetch finger, fun, fairytail, freak, feather? what is it?" So she said "It is the word that me and Jojo say sometimes outside, and I am going to say it!" So not quite sure if she knew what it was, but still worried she might, I told her to only use nice words and the interrogated the boys as to how my sweet babyChloe would know the f-word. So Caleb with his magic big brother skills gets her to tell him what the f-word is and she tells him with all her gumption that it is the word 'Stupid'! Ha here I thought it was at least a word starting with f not even thinking she doesnt even know what sound f makes.