What's the problem with chocolate milk????

Grandpa and Mimi babysat Emily, Bailey, and Liam last night. Emily and Liam went right to sleep, but Bailey was up for a while crying. Now, you have to understand the situation to really get this one. We have been trying to reduce her sugar intake, because I noticed that when she has sugar (especially 10 grams or more), she gets really mean. So the other day, after she had chocolate milk, she started yelling at me and just generally being mean, so I said, "Okay, Bailey, you just lost chocolate milk." Obviously she was very upset about that--chocolate milk is an important food group, in her view--and she cried for a while when I told her. But when Mimi and Grandpa put her to bed, she was in there crying, "What's the problem with chocolate milk? Mommy says I can't have chocolate milk any more but I love chocolate milk! I don't understand what is the problem with chocolate milk!" To make it even funnier, she still has a few sounds she can't say, so her crying ACTUALLY sounded like this: "What's the pwobwem wif chocolate miwk?" LOL. That kid is something else!!