Tattle

Olivia: "MOom," she said in that tattle-taling voice, I was thinking she was going to be tattling on her brother.
Me: "Yes, Olivia."
Olivia: "My brain just told me a naughty word." sing-songing the tattle.
Me, holding in my laugh and attempting to be serious, "Oh, what did your brain tell you?"
Olivia whispers, "dumb"
Me: "Oh my, you must tell your brain not to tell you such naughty words anymore."