Pre-T leg/arm hair is tricky. Hair growth pre-T, at least for me personally, is not as thick as it should be so looks funny. Luckly I like to work out and try to stay involved in sports so having shaved legs is nothing new or out of the ordinary. A lot of guys who are really into working out or MMA (since that is the new rage/fad) try to keep their body hair to a min. When I wear shorts, I still get the "Sir" a lot. Its mostly about how you dress and carry yourself from what I have seen, especially if you have the stereotypical male walk as one of my old friends told me. She said I walk like I am about to kick somebody butt.
As for clothes, like the above posters. Cargo shorts! I love them. I tend to wear them with t-shirts a lot.