Now this is going to sound harsh, but he's two years old. He's manipulating and playing you, period. It's a power struggle to see if you will cave. Never cave! These little people are very, very clever, don't underestimate them. I would not allow this to happen. Do you speak very sternly to them when they are not listening to you? A firm voice works wonders. For a two year old who won't stand up after a nap I would tell them that we are having snack so we are changing all the diapers and hurrying to the snack table. I've never run into anything like this.