That's Effective Parenting

Four-year-old, out of the blue: "I won't ever say that bad word to Nana again."

Mom, clueless: "Um...That's good, honey. What bad word was that?"

Child with sheepish grin, shrugged shoulders, blushing face: "..."

Wise mom, leans over to hear terrible secret: "Want to tell me in my ear so no one else has to hear it?"

Child, nodding eagerly, whispers loudly: "I...can't....remember!"