When I have long days off from my 9-5 Job I will work at Starbucks for several hours. Every so often I will get a fancy Latte or Frapachino. Most of the time I usually get ice coffee unsweetened with some cream. Now the Venti Ice Coffee is pretty strong in caffeine. Usually, you know you have had too much when you start getting paranoid and shaking and the customers around you start getting nervous.