10 Bold Calories! (…and 20 calories per bottle.)

Begs the following questions:

1. Who’s responsible for the math here? Douglas Adams? 10 calories per 8 ounces, 20 ounces per bottle, and 20 calories per bottle. Take the remainder, carry the one, and…?
2. Why are we still allowed to do weird fake crap like suggesting that someone’s only going to drink eight calories from this bottle and save the rest for later? How far can this go? Could I claim and market the fact that Dr. Pepper has 0 calories for every 0 fluid ounce serving?
3. Most importantly, what’s wrong with the other ten calories? Are they just not that bold? Can I filter out the timid calories? Perhaps they’re less buoyant. I’d hate for them to mingle in and sully up the good ones.