How we present ourselves to others has consequences. They're often predictable.
If you wear a tee-shirt with a motto that insults the viewer of the shirt (e.g., "If my dog looked like you, I'd shave his butt and make him walk backward", "You rode the short bus, didn't you?", "Bite Me") and you then approach someone to ask for help, don't act surprised if they are less helpful to you than they are to people in a non-insulting shirt. Even if it's someone who's paid to help you.
If you sport a bumpersticker that says "Bad Cop! No Doughnut!" and a tee-shirt that says "Fuck the Police", don't act surprised when the policeman who pulls you over for speeding is disinclined to let you off with a warning.
If you're a young woman or any girl past puberty and you wear a miniskirt that you have either designed to have or bought because it had attention-grabbing details (in addition to its attention-grabbing shortness, I mean) and men make crude or stupid comments about your skirt in a lame attempt to chat you up, don't act surprised.
If you're a woman and you wear a blouse that clings to the only parts of your breasts that aren't revealed by your plunging neckline, don't act surprised if some men talk to your chest instead of your face.