Anyone remember the scene in Finding Nemo when Nemo gets initiated into the order of the fish tank?? This one came from a fourth grade teacher. #1 When students are talking too much I quietly say, "shark bait..." Those that hear me reply: "Brew ha-ha!" and we repeat this as many times as it takes for the rest of the class to get in on the cheer. We end it by getting quieter and quieter until they aren't talking at all. The kids like the "secret code" and it gets their attention without raising my blood pressure from frustration.