I personally found the most annoying thing to be the repeated "Mom, Mom, Mom, Mom, Mom look at me, Mom, Mom, Mom, hey Mom, Mom, Mom, Mom, Mom, Mom!" litany. This was a technique he used when he was, oh, between 3 1/2 and 5 and, foruntately, it didn't continue. He only did it when I was trying to concentrate on other things temporarily and a simple, "That's great, honey. I see you" usually did the trick. But it still really got on my nerves. I see moms sometimes in at the grocery store and hear their kids doing that and am very glad mine got past that stage!