I think if you wear a t-shirt that is deliberately confrontational that you should probably invest in a nicely woven cod-piece. It will serve to fullfil those desires to be looked at, and if you ever accidentally time travel to the dark ages you won't have to purchase new clothing.

I have a couple of patches for punk rock bands on my bag, and a few stickers on my helmet, but I haven't gone crazy with it. Perhaps they could be could construed as offensive if you were able to read them. However, if you are close enough to read the 12 pt. font on these patches and stickers then either we are conversing on the street or you are noticing the look of shock on my face as I slam into your windshield. So no, I don't get harassed.