Quiet time....easy enough, right?

Not in my house. I swear Joshua does not know the meaning of the word "quiet." He no longer takes a nap (most days), but he has a quiet time movie in his room while Ari takes her nap. Today he can't seem to remember that he is supposed to be quiet. He is yelling for me, yelling his answers to Dora when she asks questions on the video, playing with his Weeble Wobble Castle which is incredibly loud! I'm about ready to turn off his tv and make him take a nap too. If he wakes his sister from her nap before she is ready it is going to be ugly around here until bedtime. UGH!!!!!