The parenting books say you shouldn't laugh at bad behaviour

They obviously don't have kids.
So we were all sitting down to a nice dinner. Noé is eating Cantonese fried rice (delicious) with rice, egg, ham, peas and carrots. He scoops up a big spoonful of rice and looks to see if there are any vegetables. He picks out the peas and WHIPS them across the table and down the hall. He is so bad but it is so hilarious to see just how hard he is flinging these veggies. Before we could grab his bowl away, there were peas all over the kitchen, down the hall and even some in the living room! He's so bad - takes after his father I suspect.