This makes me laugh so hard. Last week, on my normal flight back to the US, I am dressed like an homeless college student. Jeans with holes in the knees, flippies, and a hoodie. I am in line to board and this jacka** guy behind me cuts in front of me. Me being in a foul mood to start with and not feeling so hot, poke him on the shoulder and inquire just what the hell he's doing. He just looks at me and laughs. Tells me to go sit down. The best part was the GA saw the whole thing, laughs and asks me, by name, to come to the front of the line. Haha. The look on his face when he saw that he was 3 rows behind me was great.
Bottom line. Don't judge a book by their cover (or in this case crappy looking outfits)