In short, much of my life has been spent in the dreary cold climates of the middle Western states of America. Yes, I wore shorts as a boy, even suits with shorts. My blood is of Irish, German and French lineage. The Irish being the vast majority must have something to do with my personal thermometer - as it is always ready for a cold and damp climate. I'm very nearly perennially excessively warm, even when others are chattering their pearly whites and fighting to keep extremities from hypothermia. Perhaps this make me exothermic? In any case, I endeavor to keep from perspiring without added external variables like weather.
For undergraduate studies, New Orleans was my home. More sweltering places are few and far between. Yes, here I frequented the Bermuda as was the necessary convention to beat the heat. Frequently, oppressive humidity and heat taught me great love for the short.
Today, I am settled in the District, formerly swamp land, with all due tropical meteorological significances. It is once again necessary don the short pants for sake of thermoregulation. When on days like today the temperature approaches triple digits with similar figures of humidity, the short is a savior.
Length is an entirely problematic. These days the term shorts seems to be a misnomer...
These are not short. Equally problematic are the too short shorts...
This really flatters no man. Then again I wont be telling these Gents to bare less leg...
Navy SEALs at Buds from Valet Mag
Tom Selleck as Magnum PI, the character was a Navy SEAL
As Bond could wear just about anything (from here)
From Unabashedly Prep
These are perfectly acceptable forms or resort wear in my opinion, but let's keep this length for destination holidays. As for the adequate length, shorts should sit above your knee when standing while concealing your undergarments, especially when sitting. Evidently, Mr. Selleck makes the cut. The fit should be close to the body so as not to sag off the frame. See below for length and fit.
My personal choice from J.CREW
From Unabashedly Prep
JFK and Jackie (from here)
I resolve to wear shorts, of proper length, at the proper time and with the proper majesty. Ideally, few will notice I have them on if I've played my part well.