"Poison is in everything, and no thing is without poison. The dosage makes it either a poison or a remedy." -Paracelsus
If I slurped 141.82 shots of espresso I would die. This is according to Energyfiend's online applet which figures this out by asking for your weight and your favorite caffeinated beverage. Then, it calculates the fatal amount of caffeine for you. There is an impressive array of coffee beverages to choose from ranging from "brewed" "instant" "espresso" or "decaf." Additionally, there are other options such as Red Bull, Energy Star, et al. According to the applet, the Starbucks Tall coffee (12 oz) would kill me after 42 cups. Trenta anyone?
The next time you are sipping your coffee, you will now have a nagging feeling of caffeine's fatal potentiality. Coupled with the reality that coffee is the second most traded commodity in the world, (oil is the first) and the introduction of the 30 oz Trenta by Starbucks (which is bigger than the human stomach), we can rest assured that humanity is now screwed.
P.S. Now you know I weigh 160 lbs. Please keep it a secret!