X-rated clothing
We often get uncomfortable when we see young people wearing clothes that have some suspicious wording or images on them. Swearing words, naked people, and so on can really set the mood when you enter a room wearing all of that on your shirt for example. People may get uptight and avoid speaking with you.
But for the bold people out there we say just go for it and wear anything you want on your body. Why not, after all this is a free country and no one has the right to tell you what you can or can’t do. Just a reminder though that you should not act surprised when someone looks at you funny.