Mine do the same Glenlee, to me it almost sounds like they are saying "who me?" And i would talk to them constantly as keets and they would make it specially if they did something naughty like dumping their waterer and food and momma caught them. Still to this day they make it, my boys more then the girls. Charlie is most famous for it specially when i am getting cuddles from him. While getting an earful from Blue, Echo and Delta and the other girls. They hate it when I have him because he is the top dog, Blue will charge him but backs down instantly when Charlie has had enough of his shenanigans.
It's fun to watch them posture toward each other. They act all tough and go in for the dive and rush and then back off. Then the one who they were dive bombing does a jump up, puffs out its chest and shakes its feathers to make itself look like a big bad dude! Shenanigans is a good word for it!