Ask the MB: Blazer and Suit Jacket Length
A: Nick, we believe there is a perfect length for a blazer or suit jacket (no, there is no difference). To illustrate this, take a look at da Vinci's Vitruvian Man below. A jacket should end at the end of your nutbag — give or take a 1/4" — when tried at room temperature. This will obviously involve standing in front of a mirror with your pants down, so we don't recommend doing this in department stores with security cameras, fraternity houses, or the Congressional gym, unless you want to end up on the web some day.
Note: If your balls go for a swim when you sit down on the can, this method will not work for you.
Earlier: Muammar Gaddafi: The Man Who Would Be Ken