I have a very difficult third grade class this year and they will do a lot of these things to get attention, even when I am trying to give them positives. I have been consistent all year with it and have told them if they don't respond correctly, to first try not responding at all. So if they can't do it correctly, they can just listen to others. If that doesn't work, then as a whole class I say how sad I am but I have to not only give that smiley but now a frown for not appropriately responding. Usually the class with groan and will say to those specific people, please stop! That has been a big helper in my class, I talked to them about the No Guff and how they can positively ask someone to stop without being mean.