Dare Me to Do It?

"Dare me to do it?"  That's what I think Nathan's thinking when he starts doing this at meal times...

We are working on teaching him that its not ok to throw his cup and/or food when he's eating.  He doesn't always listen as well as he does in the video (he also doesn't try to test me as many times either - maybe he was performing for the camera?).  But it is working, we have much less throwing then we did a few weeks ago... though I desperately need to wash the wall near where Nathan usually sits!