Keys to good communication

Have you ever tried to explain something to someone and he/she just wasn't getting it? Well that happens to 3 year-olds too.
Matt and Emery put on headbands and stuck combs and brushes in them. Then the following conversation occurred:
Matt: "Yeah! We're Knights!"
Emery: "Yeah! Where's a knife!"
Matt: "No, no...no, we're KNIGHTS!"
Emery: "Yeah! We're NICE!"
Matt gives up and they both run around - Matt yelling, "We're knights!" with Emery yelling, "We're a knife!"
Priceless...