Diet Coke

I'm not shy to admit that I drink a lot of Diet Coke. However, at 2 1/2 years old, I didn't think my boys would be so in tune with my bad habit. We went out to lunch yesterday and when the waiter came around to take our drink order, Ryan ordered a Diet Coke! I couldn't stop laughing. I changed his order to a water, but now I'm wondering how long I'm going to be able to get away with that. After all, as a parent, I am supposed to practice what I preach. So, does that mean I might actually have to start drinking water too?