I used to come right from the Y in my work out clothes before I flew home every day. Nothing like a cut off t-shirt and sweating like a beast, carrying a smelly gym, and drinking a protien shake while walking through the FBO out to your plane. Thats what freight is all about!!!
On a side note I was asked to fuel some ones plane( I did have an FBO t shirt on that resembled that FBO's). I told them to get it your self jackass and walked away. I was hoping they would complain.