Lactose intolerant?

Just watched the cooking with Caillou episode and saw he didn't put any cheese on his pizza, while his sister and parents had cheese on theirs. However, later in the show he again made pizza with his friends, and mysteriously his new pizza did have cheese, while one of his friends (the mulatto twins) didn't. Another weird thing was that the first time they made pizzas, his mom set the timer for 15 minutes. The second time she said they'd be ready in half an hour.

Yet another thing that bugs me is how they put carrots on a pizza without cheese. Caillou tried it and was like "mmmm! the carrots make the pizza extra crunchy!"

Let's face it, there could be nothing good about carrots on a pizza, esp without cheese. I bet there are little kids out there who tried carrots on their pizzas and were very disappointed by the result.